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Finding the Fourth Proportional to 424,663.60, 636,995.40 and 154,811.98

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Solution

The fourth proportional to 424,663.60, 636,995.40 and 154,811.98 is: 232,217.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,663.60 : 636,995.40 = 154,811.98 : x
  2. Step 2: Convert to fraction form
    424,663.60/636,995.40 = 154,811.98/x
  3. Step 3: Cross multiply
    424,663.60x = 636,995.40 × 154,811.98
  4. Step 4: Simplify right side
    424,663.60x = 98,614,519,124.89
  5. Step 5: Solve for x
    x = 98,614,519,124.89/424,663.60
  6. Step 6: Final answer
    x = 232,217.97

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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.