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Finding the Fourth Proportional to 354,838.12, 531,712.15 and 240,837.81

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Solution

The fourth proportional to 354,838.12, 531,712.15 and 240,837.81 is: 360,886.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,838.12 : 531,712.15 = 240,837.81 : x
  2. Step 2: Convert to fraction form
    354,838.12/531,712.15 = 240,837.81/x
  3. Step 3: Cross multiply
    354,838.12x = 531,712.15 × 240,837.81
  4. Step 4: Simplify right side
    354,838.12x = 128,056,387,160.38
  5. Step 5: Solve for x
    x = 128,056,387,160.38/354,838.12
  6. Step 6: Final answer
    x = 360,886.78

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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.