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Finding the Fourth Proportional to 261,030.60, 391,254.30 and 148,764.60

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Solution

The fourth proportional to 261,030.60, 391,254.30 and 148,764.60 is: 222,980.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,030.60 : 391,254.30 = 148,764.60 : x
  2. Step 2: Convert to fraction form
    261,030.60/391,254.30 = 148,764.60/x
  3. Step 3: Cross multiply
    261,030.60x = 391,254.30 × 148,764.60
  4. Step 4: Simplify right side
    261,030.60x = 58,204,789,437.78
  5. Step 5: Solve for x
    x = 58,204,789,437.78/261,030.60
  6. Step 6: Final answer
    x = 222,980.71

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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.