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Finding the Fourth Proportional to 560,080.32, 840,132 and 312,338.88

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Solution

The fourth proportional to 560,080.32, 840,132 and 312,338.88 is: 468,514.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,080.32 : 840,132 = 312,338.88 : x
  2. Step 2: Convert to fraction form
    560,080.32/840,132 = 312,338.88/x
  3. Step 3: Cross multiply
    560,080.32x = 840,132 × 312,338.88
  4. Step 4: Simplify right side
    560,080.32x = 262,405,887,932.16
  5. Step 5: Solve for x
    x = 262,405,887,932.16/560,080.32
  6. Step 6: Final answer
    x = 468,514.74

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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.