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Finding the Fourth Proportional to 356,292.40, 491,691.49 and 203,327.55

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Solution

The fourth proportional to 356,292.40, 491,691.49 and 203,327.55 is: 280,596.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,292.40 : 491,691.49 = 203,327.55 : x
  2. Step 2: Convert to fraction form
    356,292.40/491,691.49 = 203,327.55/x
  3. Step 3: Cross multiply
    356,292.40x = 491,691.49 × 203,327.55
  4. Step 4: Simplify right side
    356,292.40x = 99,974,426,017.55
  5. Step 5: Solve for x
    x = 99,974,426,017.55/356,292.40
  6. Step 6: Final answer
    x = 280,596.57

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1.5x scale

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.