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Finding the Fourth Proportional to 387,476.94, 581,221.32 and 147,604.15

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Solution

The fourth proportional to 387,476.94, 581,221.32 and 147,604.15 is: 221,408.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,476.94 : 581,221.32 = 147,604.15 : x
  2. Step 2: Convert to fraction form
    387,476.94/581,221.32 = 147,604.15/x
  3. Step 3: Cross multiply
    387,476.94x = 581,221.32 × 147,604.15
  4. Step 4: Simplify right side
    387,476.94x = 85,790,681,953.58
  5. Step 5: Solve for x
    x = 85,790,681,953.58/387,476.94
  6. Step 6: Final answer
    x = 221,408.49

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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.