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Finding the Fourth Proportional to 424,241.70, 636,195.78 and 154,305.76

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Solution

The fourth proportional to 424,241.70, 636,195.78 and 154,305.76 is: 231,397.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,241.70 : 636,195.78 = 154,305.76 : x
  2. Step 2: Convert to fraction form
    424,241.70/636,195.78 = 154,305.76/x
  3. Step 3: Cross multiply
    424,241.70x = 636,195.78 × 154,305.76
  4. Step 4: Simplify right side
    424,241.70x = 98,168,673,341.69
  5. Step 5: Solve for x
    x = 98,168,673,341.69/424,241.70
  6. Step 6: Final answer
    x = 231,397.98

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1.5x scale

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.