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Finding the Fourth Proportional to 387,752.52, 581,628.90 and 121,513.02

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Solution

The fourth proportional to 387,752.52, 581,628.90 and 121,513.02 is: 182,269.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,752.52 : 581,628.90 = 121,513.02 : x
  2. Step 2: Convert to fraction form
    387,752.52/581,628.90 = 121,513.02/x
  3. Step 3: Cross multiply
    387,752.52x = 581,628.90 × 121,513.02
  4. Step 4: Simplify right side
    387,752.52x = 70,675,484,158.28
  5. Step 5: Solve for x
    x = 70,675,484,158.28/387,752.52
  6. Step 6: Final answer
    x = 182,269.57

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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.