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Finding the Fourth Proportional to 288,342.42, 432,480.80 and 77,963.96

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Solution

The fourth proportional to 288,342.42, 432,480.80 and 77,963.96 is: 116,937.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,342.42 : 432,480.80 = 77,963.96 : x
  2. Step 2: Convert to fraction form
    288,342.42/432,480.80 = 77,963.96/x
  3. Step 3: Cross multiply
    288,342.42x = 432,480.80 × 77,963.96
  4. Step 4: Simplify right side
    288,342.42x = 33,717,915,791.97
  5. Step 5: Solve for x
    x = 33,717,915,791.97/288,342.42
  6. Step 6: Final answer
    x = 116,937.06

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1.5x scale

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.