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Finding the Fourth Proportional to 372,697.20, 559,045.80 and 123,379.20

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Solution

The fourth proportional to 372,697.20, 559,045.80 and 123,379.20 is: 185,068.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,697.20 : 559,045.80 = 123,379.20 : x
  2. Step 2: Convert to fraction form
    372,697.20/559,045.80 = 123,379.20/x
  3. Step 3: Cross multiply
    372,697.20x = 559,045.80 × 123,379.20
  4. Step 4: Simplify right side
    372,697.20x = 68,974,623,567.36
  5. Step 5: Solve for x
    x = 68,974,623,567.36/372,697.20
  6. Step 6: Final answer
    x = 185,068.80

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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.