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Finding the Fourth Proportional to 302,499.30, 453,748.95 and 278,879.70

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Solution

The fourth proportional to 302,499.30, 453,748.95 and 278,879.70 is: 418,319.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,499.30 : 453,748.95 = 278,879.70 : x
  2. Step 2: Convert to fraction form
    302,499.30/453,748.95 = 278,879.70/x
  3. Step 3: Cross multiply
    302,499.30x = 453,748.95 × 278,879.70
  4. Step 4: Simplify right side
    302,499.30x = 126,541,371,051.32
  5. Step 5: Solve for x
    x = 126,541,371,051.32/302,499.30
  6. Step 6: Final answer
    x = 418,319.55

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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.