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Finding the Fourth Proportional to 424,014.60, 635,626.62 and 143,335.56

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Solution

The fourth proportional to 424,014.60, 635,626.62 and 143,335.56 is: 214,869.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,014.60 : 635,626.62 = 143,335.56 : x
  2. Step 2: Convert to fraction form
    424,014.60/635,626.62 = 143,335.56/x
  3. Step 3: Cross multiply
    424,014.60x = 635,626.62 × 143,335.56
  4. Step 4: Simplify right side
    424,014.60x = 91,107,897,528.61
  5. Step 5: Solve for x
    x = 91,107,897,528.61/424,014.60
  6. Step 6: Final answer
    x = 214,869.72

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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.