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Finding the Fourth Proportional to 387,881.68, 534,973.04 and 265,446.56

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Solution

The fourth proportional to 387,881.68, 534,973.04 and 265,446.56 is: 366,108.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,881.68 : 534,973.04 = 265,446.56 : x
  2. Step 2: Convert to fraction form
    387,881.68/534,973.04 = 265,446.56/x
  3. Step 3: Cross multiply
    387,881.68x = 534,973.04 × 265,446.56
  4. Step 4: Simplify right side
    387,881.68x = 142,006,753,160.74
  5. Step 5: Solve for x
    x = 142,006,753,160.74/387,881.68
  6. Step 6: Final answer
    x = 366,108.43

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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.