Home / 424,156.18-636,217.65-143,673.42

Finding the Fourth Proportional to 424,156.18, 636,217.65 and 143,673.42

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Solution

The fourth proportional to 424,156.18, 636,217.65 and 143,673.42 is: 215,504.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,156.18 : 636,217.65 = 143,673.42 : x
  2. Step 2: Convert to fraction form
    424,156.18/636,217.65 = 143,673.42/x
  3. Step 3: Cross multiply
    424,156.18x = 636,217.65 × 143,673.42
  4. Step 4: Simplify right side
    424,156.18x = 91,407,565,639.86
  5. Step 5: Solve for x
    x = 91,407,565,639.86/424,156.18
  6. Step 6: Final answer
    x = 215,504.50

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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.