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Finding the Fourth Proportional to 396,073.60, 546,437.96 and 260,180.72

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Solution

The fourth proportional to 396,073.60, 546,437.96 and 260,180.72 is: 358,955.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,073.60 : 546,437.96 = 260,180.72 : x
  2. Step 2: Convert to fraction form
    396,073.60/546,437.96 = 260,180.72/x
  3. Step 3: Cross multiply
    396,073.60x = 546,437.96 × 260,180.72
  4. Step 4: Simplify right side
    396,073.60x = 142,172,621,868.13
  5. Step 5: Solve for x
    x = 142,172,621,868.13/396,073.60
  6. Step 6: Final answer
    x = 358,955.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.