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Finding the Fourth Proportional to 429,304.95, 644,066.15 and 303,191.55

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Solution

The fourth proportional to 429,304.95, 644,066.15 and 303,191.55 is: 454,864.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,304.95 : 644,066.15 = 303,191.55 : x
  2. Step 2: Convert to fraction form
    429,304.95/644,066.15 = 303,191.55/x
  3. Step 3: Cross multiply
    429,304.95x = 644,066.15 × 303,191.55
  4. Step 4: Simplify right side
    429,304.95x = 195,275,412,805.08
  5. Step 5: Solve for x
    x = 195,275,412,805.08/429,304.95
  6. Step 6: Final answer
    x = 454,864.11

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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.