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Finding the Fourth Proportional to 387,530.73, 581,534.84 and 245,179.91

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Solution

The fourth proportional to 387,530.73, 581,534.84 and 245,179.91 is: 367,920.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,530.73 : 581,534.84 = 245,179.91 : x
  2. Step 2: Convert to fraction form
    387,530.73/581,534.84 = 245,179.91/x
  3. Step 3: Cross multiply
    387,530.73x = 581,534.84 × 245,179.91
  4. Step 4: Simplify right side
    387,530.73x = 142,580,661,799.85
  5. Step 5: Solve for x
    x = 142,580,661,799.85/387,530.73
  6. Step 6: Final answer
    x = 367,920.92

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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.