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Finding the Fourth Proportional to 424,506.64, 636,478.08 and 168,169.18

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Solution

The fourth proportional to 424,506.64, 636,478.08 and 168,169.18 is: 252,142.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,506.64 : 636,478.08 = 168,169.18 : x
  2. Step 2: Convert to fraction form
    424,506.64/636,478.08 = 168,169.18/x
  3. Step 3: Cross multiply
    424,506.64x = 636,478.08 × 168,169.18
  4. Step 4: Simplify right side
    424,506.64x = 107,035,996,801.57
  5. Step 5: Solve for x
    x = 107,035,996,801.57/424,506.64
  6. Step 6: Final answer
    x = 252,142.10

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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.