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Finding the Fourth Proportional to 424,133.40, 636,005.70 and 187,354.20

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Solution

The fourth proportional to 424,133.40, 636,005.70 and 187,354.20 is: 280,945.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,133.40 : 636,005.70 = 187,354.20 : x
  2. Step 2: Convert to fraction form
    424,133.40/636,005.70 = 187,354.20/x
  3. Step 3: Cross multiply
    424,133.40x = 636,005.70 × 187,354.20
  4. Step 4: Simplify right side
    424,133.40x = 119,158,339,118.94
  5. Step 5: Solve for x
    x = 119,158,339,118.94/424,133.40
  6. Step 6: Final answer
    x = 280,945.43

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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.