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Finding the Fourth Proportional to 314,781.90, 472,282.20 and 137,416.20

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Solution

The fourth proportional to 314,781.90, 472,282.20 and 137,416.20 is: 206,172.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,781.90 : 472,282.20 = 137,416.20 : x
  2. Step 2: Convert to fraction form
    314,781.90/472,282.20 = 137,416.20/x
  3. Step 3: Cross multiply
    314,781.90x = 472,282.20 × 137,416.20
  4. Step 4: Simplify right side
    314,781.90x = 64,899,225,251.64
  5. Step 5: Solve for x
    x = 64,899,225,251.64/314,781.90
  6. Step 6: Final answer
    x = 206,172.04

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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.