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Finding the Fourth Proportional to 388,562.38, 532,332.32 and 374,000.81

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Solution

The fourth proportional to 388,562.38, 532,332.32 and 374,000.81 is: 512,382.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,562.38 : 532,332.32 = 374,000.81 : x
  2. Step 2: Convert to fraction form
    388,562.38/532,332.32 = 374,000.81/x
  3. Step 3: Cross multiply
    388,562.38x = 532,332.32 × 374,000.81
  4. Step 4: Simplify right side
    388,562.38x = 199,092,714,337.51
  5. Step 5: Solve for x
    x = 199,092,714,337.51/388,562.38
  6. Step 6: Final answer
    x = 512,382.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.