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Finding the Fourth Proportional to 424,613.76, 636,395.76 and 214,311.84

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Solution

The fourth proportional to 424,613.76, 636,395.76 and 214,311.84 is: 321,202.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,613.76 : 636,395.76 = 214,311.84 : x
  2. Step 2: Convert to fraction form
    424,613.76/636,395.76 = 214,311.84/x
  3. Step 3: Cross multiply
    424,613.76x = 636,395.76 × 214,311.84
  4. Step 4: Simplify right side
    424,613.76x = 136,387,146,293.80
  5. Step 5: Solve for x
    x = 136,387,146,293.80/424,613.76
  6. Step 6: Final answer
    x = 321,202.84

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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.