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Finding the Fourth Proportional to 424,375.07, 636,641.32 and 140,085.42

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Solution

The fourth proportional to 424,375.07, 636,641.32 and 140,085.42 is: 210,154.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,375.07 : 636,641.32 = 140,085.42 : x
  2. Step 2: Convert to fraction form
    424,375.07/636,641.32 = 140,085.42/x
  3. Step 3: Cross multiply
    424,375.07x = 636,641.32 × 140,085.42
  4. Step 4: Simplify right side
    424,375.07x = 89,184,169,598.26
  5. Step 5: Solve for x
    x = 89,184,169,598.26/424,375.07
  6. Step 6: Final answer
    x = 210,154.12

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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.