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Finding the Fourth Proportional to 356,347.79, 491,767.87 and 203,382.89

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Solution

The fourth proportional to 356,347.79, 491,767.87 and 203,382.89 is: 280,672.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,347.79 : 491,767.87 = 203,382.89 : x
  2. Step 2: Convert to fraction form
    356,347.79/491,767.87 = 203,382.89/x
  3. Step 3: Cross multiply
    356,347.79x = 491,767.87 × 203,382.89
  4. Step 4: Simplify right side
    356,347.79x = 100,017,170,609.74
  5. Step 5: Solve for x
    x = 100,017,170,609.74/356,347.79
  6. Step 6: Final answer
    x = 280,672.91

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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.