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Finding the Fourth Proportional to 302,634.28, 417,773.90 and 215,475.90

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Solution

The fourth proportional to 302,634.28, 417,773.90 and 215,475.90 is: 297,455.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,634.28 : 417,773.90 = 215,475.90 : x
  2. Step 2: Convert to fraction form
    302,634.28/417,773.90 = 215,475.90/x
  3. Step 3: Cross multiply
    302,634.28x = 417,773.90 × 215,475.90
  4. Step 4: Simplify right side
    302,634.28x = 90,020,206,071.05
  5. Step 5: Solve for x
    x = 90,020,206,071.05/302,634.28
  6. Step 6: Final answer
    x = 297,455.42

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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.