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Finding the Fourth Proportional to 424,477.28, 636,496.81 and 124,918.96

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Solution

The fourth proportional to 424,477.28, 636,496.81 and 124,918.96 is: 187,313.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,477.28 : 636,496.81 = 124,918.96 : x
  2. Step 2: Convert to fraction form
    424,477.28/636,496.81 = 124,918.96/x
  3. Step 3: Cross multiply
    424,477.28x = 636,496.81 × 124,918.96
  4. Step 4: Simplify right side
    424,477.28x = 79,510,519,548.52
  5. Step 5: Solve for x
    x = 79,510,519,548.52/424,477.28
  6. Step 6: Final answer
    x = 187,313.96

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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.