Home / 317,983.60-438,721.62-190,612.72

Finding the Fourth Proportional to 317,983.60, 438,721.62 and 190,612.72

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Solution

The fourth proportional to 317,983.60, 438,721.62 and 190,612.72 is: 262,988.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,983.60 : 438,721.62 = 190,612.72 : x
  2. Step 2: Convert to fraction form
    317,983.60/438,721.62 = 190,612.72/x
  3. Step 3: Cross multiply
    317,983.60x = 438,721.62 × 190,612.72
  4. Step 4: Simplify right side
    317,983.60x = 83,625,921,311.01
  5. Step 5: Solve for x
    x = 83,625,921,311.01/317,983.60
  6. Step 6: Final answer
    x = 262,988.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.