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Finding the Fourth Proportional to 424,005.64, 636,001.98 and 108,459.88

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Solution

The fourth proportional to 424,005.64, 636,001.98 and 108,459.88 is: 162,688.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,005.64 : 636,001.98 = 108,459.88 : x
  2. Step 2: Convert to fraction form
    424,005.64/636,001.98 = 108,459.88/x
  3. Step 3: Cross multiply
    424,005.64x = 636,001.98 × 108,459.88
  4. Step 4: Simplify right side
    424,005.64x = 68,980,698,430.56
  5. Step 5: Solve for x
    x = 68,980,698,430.56/424,005.64
  6. Step 6: Final answer
    x = 162,688.16

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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.