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Finding the Fourth Proportional to 424,009.55, 636,004.35 and 104,160.92

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Solution

The fourth proportional to 424,009.55, 636,004.35 and 104,160.92 is: 156,238.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,009.55 : 636,004.35 = 104,160.92 : x
  2. Step 2: Convert to fraction form
    424,009.55/636,004.35 = 104,160.92/x
  3. Step 3: Cross multiply
    424,009.55x = 636,004.35 × 104,160.92
  4. Step 4: Simplify right side
    424,009.55x = 66,246,794,860.76
  5. Step 5: Solve for x
    x = 66,246,794,860.76/424,009.55
  6. Step 6: Final answer
    x = 156,238.92

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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.