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Finding the Fourth Proportional to 424,407.84, 636,513.02 and 124,808.28

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Solution

The fourth proportional to 424,407.84, 636,513.02 and 124,808.28 is: 187,183.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,407.84 : 636,513.02 = 124,808.28 : x
  2. Step 2: Convert to fraction form
    424,407.84/636,513.02 = 124,808.28/x
  3. Step 3: Cross multiply
    424,407.84x = 636,513.02 × 124,808.28
  4. Step 4: Simplify right side
    424,407.84x = 79,442,095,223.81
  5. Step 5: Solve for x
    x = 79,442,095,223.81/424,407.84
  6. Step 6: Final answer
    x = 187,183.38

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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.