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Finding the Fourth Proportional to 487,635.80, 731,453.70 and 155,245.40

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Solution

The fourth proportional to 487,635.80, 731,453.70 and 155,245.40 is: 232,868.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,635.80 : 731,453.70 = 155,245.40 : x
  2. Step 2: Convert to fraction form
    487,635.80/731,453.70 = 155,245.40/x
  3. Step 3: Cross multiply
    487,635.80x = 731,453.70 × 155,245.40
  4. Step 4: Simplify right side
    487,635.80x = 113,554,822,237.98
  5. Step 5: Solve for x
    x = 113,554,822,237.98/487,635.80
  6. Step 6: Final answer
    x = 232,868.10

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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.