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Finding the Fourth Proportional to 575,221.64, 862,275.18 and 219,962.12

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Solution

The fourth proportional to 575,221.64, 862,275.18 and 219,962.12 is: 329,730.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,221.64 : 862,275.18 = 219,962.12 : x
  2. Step 2: Convert to fraction form
    575,221.64/862,275.18 = 219,962.12/x
  3. Step 3: Cross multiply
    575,221.64x = 862,275.18 × 219,962.12
  4. Step 4: Simplify right side
    575,221.64x = 189,667,876,616.18
  5. Step 5: Solve for x
    x = 189,667,876,616.18/575,221.64
  6. Step 6: Final answer
    x = 329,730.08

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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.