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Finding the Fourth Proportional to 560,115.88, 772,929.16 and 318,364.88

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Solution

The fourth proportional to 560,115.88, 772,929.16 and 318,364.88 is: 439,326.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,115.88 : 772,929.16 = 318,364.88 : x
  2. Step 2: Convert to fraction form
    560,115.88/772,929.16 = 318,364.88/x
  3. Step 3: Cross multiply
    560,115.88x = 772,929.16 × 318,364.88
  4. Step 4: Simplify right side
    560,115.88x = 246,073,499,271.90
  5. Step 5: Solve for x
    x = 246,073,499,271.90/560,115.88
  6. Step 6: Final answer
    x = 439,326.05

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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.