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Finding the Fourth Proportional to 417,718.90, 576,462.50 and 226,731.88

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Solution

The fourth proportional to 417,718.90, 576,462.50 and 226,731.88 is: 312,895.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,718.90 : 576,462.50 = 226,731.88 : x
  2. Step 2: Convert to fraction form
    417,718.90/576,462.50 = 226,731.88/x
  3. Step 3: Cross multiply
    417,718.90x = 576,462.50 × 226,731.88
  4. Step 4: Simplify right side
    417,718.90x = 130,702,426,374.50
  5. Step 5: Solve for x
    x = 130,702,426,374.50/417,718.90
  6. Step 6: Final answer
    x = 312,895.65

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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.