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Finding the Fourth Proportional to 372,605.60, 559,279.20 and 172,971.20

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Solution

The fourth proportional to 372,605.60, 559,279.20 and 172,971.20 is: 259,628.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,605.60 : 559,279.20 = 172,971.20 : x
  2. Step 2: Convert to fraction form
    372,605.60/559,279.20 = 172,971.20/x
  3. Step 3: Cross multiply
    372,605.60x = 559,279.20 × 172,971.20
  4. Step 4: Simplify right side
    372,605.60x = 96,739,194,359.04
  5. Step 5: Solve for x
    x = 96,739,194,359.04/372,605.60
  6. Step 6: Final answer
    x = 259,628.93

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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.