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Finding the Fourth Proportional to 424,165.11, 636,112.80 and 139,802.67

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Solution

The fourth proportional to 424,165.11, 636,112.80 and 139,802.67 is: 209,659.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,165.11 : 636,112.80 = 139,802.67 : x
  2. Step 2: Convert to fraction form
    424,165.11/636,112.80 = 139,802.67/x
  3. Step 3: Cross multiply
    424,165.11x = 636,112.80 × 139,802.67
  4. Step 4: Simplify right side
    424,165.11x = 88,930,267,861.18
  5. Step 5: Solve for x
    x = 88,930,267,861.18/424,165.11
  6. Step 6: Final answer
    x = 209,659.55

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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.