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Finding the Fourth Proportional to 315,280.80, 472,921.20 and 296,618.40

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Solution

The fourth proportional to 315,280.80, 472,921.20 and 296,618.40 is: 444,927.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,280.80 : 472,921.20 = 296,618.40 : x
  2. Step 2: Convert to fraction form
    315,280.80/472,921.20 = 296,618.40/x
  3. Step 3: Cross multiply
    315,280.80x = 472,921.20 × 296,618.40
  4. Step 4: Simplify right side
    315,280.80x = 140,277,129,670.08
  5. Step 5: Solve for x
    x = 140,277,129,670.08/315,280.80
  6. Step 6: Final answer
    x = 444,927.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.