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Finding the Fourth Proportional to 387,881.12, 581,820.72 and 107,397.44

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Solution

The fourth proportional to 387,881.12, 581,820.72 and 107,397.44 is: 161,095.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,881.12 : 581,820.72 = 107,397.44 : x
  2. Step 2: Convert to fraction form
    387,881.12/581,820.72 = 107,397.44/x
  3. Step 3: Cross multiply
    387,881.12x = 581,820.72 × 107,397.44
  4. Step 4: Simplify right side
    387,881.12x = 62,486,055,866.96
  5. Step 5: Solve for x
    x = 62,486,055,866.96/387,881.12
  6. Step 6: Final answer
    x = 161,095.89

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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.