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Finding the Fourth Proportional to 316,749.60, 437,121.50 and 180,780.82

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Solution

The fourth proportional to 316,749.60, 437,121.50 and 180,780.82 is: 249,481.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,749.60 : 437,121.50 = 180,780.82 : x
  2. Step 2: Convert to fraction form
    316,749.60/437,121.50 = 180,780.82/x
  3. Step 3: Cross multiply
    316,749.60x = 437,121.50 × 180,780.82
  4. Step 4: Simplify right side
    316,749.60x = 79,023,183,209.63
  5. Step 5: Solve for x
    x = 79,023,183,209.63/316,749.60
  6. Step 6: Final answer
    x = 249,481.56

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1.5x scale

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.