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Finding the Fourth Proportional to 387,114.71, 580,573.44 and 120,902.13

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Solution

The fourth proportional to 387,114.71, 580,573.44 and 120,902.13 is: 181,322.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,114.71 : 580,573.44 = 120,902.13 : x
  2. Step 2: Convert to fraction form
    387,114.71/580,573.44 = 120,902.13/x
  3. Step 3: Cross multiply
    387,114.71x = 580,573.44 × 120,902.13
  4. Step 4: Simplify right side
    387,114.71x = 70,192,565,517.43
  5. Step 5: Solve for x
    x = 70,192,565,517.43/387,114.71
  6. Step 6: Final answer
    x = 181,322.40

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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.