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Finding the Fourth Proportional to 312,958.17, 469,319.40 and 113,229.18

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Solution

The fourth proportional to 312,958.17, 469,319.40 and 113,229.18 is: 169,801.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,958.17 : 469,319.40 = 113,229.18 : x
  2. Step 2: Convert to fraction form
    312,958.17/469,319.40 = 113,229.18/x
  3. Step 3: Cross multiply
    312,958.17x = 469,319.40 × 113,229.18
  4. Step 4: Simplify right side
    312,958.17x = 53,140,650,820.09
  5. Step 5: Solve for x
    x = 53,140,650,820.09/312,958.17
  6. Step 6: Final answer
    x = 169,801.13

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1.5x scale

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.