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Finding the Fourth Proportional to 424,154.18, 636,214.65 and 143,671.42

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Solution

The fourth proportional to 424,154.18, 636,214.65 and 143,671.42 is: 215,501.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,154.18 : 636,214.65 = 143,671.42 : x
  2. Step 2: Convert to fraction form
    424,154.18/636,214.65 = 143,671.42/x
  3. Step 3: Cross multiply
    424,154.18x = 636,214.65 × 143,671.42
  4. Step 4: Simplify right side
    424,154.18x = 91,405,862,190.30
  5. Step 5: Solve for x
    x = 91,405,862,190.30/424,154.18
  6. Step 6: Final answer
    x = 215,501.50

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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.