Home / 313,823.02-472,442.07-285,922.30

Finding the Fourth Proportional to 313,823.02, 472,442.07 and 285,922.30

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Solution

The fourth proportional to 313,823.02, 472,442.07 and 285,922.30 is: 430,439.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,823.02 : 472,442.07 = 285,922.30 : x
  2. Step 2: Convert to fraction form
    313,823.02/472,442.07 = 285,922.30/x
  3. Step 3: Cross multiply
    313,823.02x = 472,442.07 × 285,922.30
  4. Step 4: Simplify right side
    313,823.02x = 135,081,723,271.16
  5. Step 5: Solve for x
    x = 135,081,723,271.16/313,823.02
  6. Step 6: Final answer
    x = 430,439.18

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.