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Finding the Fourth Proportional to 424,279.50, 636,722.76 and 154,407.24

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Solution

The fourth proportional to 424,279.50, 636,722.76 and 154,407.24 is: 231,721.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,279.50 : 636,722.76 = 154,407.24 : x
  2. Step 2: Convert to fraction form
    424,279.50/636,722.76 = 154,407.24/x
  3. Step 3: Cross multiply
    424,279.50x = 636,722.76 × 154,407.24
  4. Step 4: Simplify right side
    424,279.50x = 98,314,604,016.78
  5. Step 5: Solve for x
    x = 98,314,604,016.78/424,279.50
  6. Step 6: Final answer
    x = 231,721.32

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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.