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Finding the Fourth Proportional to 391,452.08, 540,464.08 and 300,645.76

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Solution

The fourth proportional to 391,452.08, 540,464.08 and 300,645.76 is: 415,091.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,452.08 : 540,464.08 = 300,645.76 : x
  2. Step 2: Convert to fraction form
    391,452.08/540,464.08 = 300,645.76/x
  3. Step 3: Cross multiply
    391,452.08x = 540,464.08 × 300,645.76
  4. Step 4: Simplify right side
    391,452.08x = 162,488,234,084.30
  5. Step 5: Solve for x
    x = 162,488,234,084.30/391,452.08
  6. Step 6: Final answer
    x = 415,091.00

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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.