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Finding the Fourth Proportional to 424,004.64, 636,000.48 and 108,458.88

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Solution

The fourth proportional to 424,004.64, 636,000.48 and 108,458.88 is: 162,686.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,004.64 : 636,000.48 = 108,458.88 : x
  2. Step 2: Convert to fraction form
    424,004.64/636,000.48 = 108,458.88/x
  3. Step 3: Cross multiply
    424,004.64x = 636,000.48 × 108,458.88
  4. Step 4: Simplify right side
    424,004.64x = 68,979,899,740.26
  5. Step 5: Solve for x
    x = 68,979,899,740.26/424,004.64
  6. Step 6: Final answer
    x = 162,686.66

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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.