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Finding the Fourth Proportional to 559,951.12, 772,713.30 and 318,229.48

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Solution

The fourth proportional to 559,951.12, 772,713.30 and 318,229.48 is: 439,145.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,951.12 : 772,713.30 = 318,229.48 : x
  2. Step 2: Convert to fraction form
    559,951.12/772,713.30 = 318,229.48/x
  3. Step 3: Cross multiply
    559,951.12x = 772,713.30 × 318,229.48
  4. Step 4: Simplify right side
    559,951.12x = 245,900,151,648.08
  5. Step 5: Solve for x
    x = 245,900,151,648.08/559,951.12
  6. Step 6: Final answer
    x = 439,145.74

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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.