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Finding the Fourth Proportional to 387,681.60, 534,922.08 and 226,505.52

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Solution

The fourth proportional to 387,681.60, 534,922.08 and 226,505.52 is: 312,531.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,681.60 : 534,922.08 = 226,505.52 : x
  2. Step 2: Convert to fraction form
    387,681.60/534,922.08 = 226,505.52/x
  3. Step 3: Cross multiply
    387,681.60x = 534,922.08 × 226,505.52
  4. Step 4: Simplify right side
    387,681.60x = 121,162,803,889.88
  5. Step 5: Solve for x
    x = 121,162,803,889.88/387,681.60
  6. Step 6: Final answer
    x = 312,531.74

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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.