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Finding the Fourth Proportional to 356,302.72, 491,705.64 and 203,337.84

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Solution

The fourth proportional to 356,302.72, 491,705.64 and 203,337.84 is: 280,610.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,302.72 : 491,705.64 = 203,337.84 : x
  2. Step 2: Convert to fraction form
    356,302.72/491,705.64 = 203,337.84/x
  3. Step 3: Cross multiply
    356,302.72x = 491,705.64 × 203,337.84
  4. Step 4: Simplify right side
    356,302.72x = 99,982,362,753.42
  5. Step 5: Solve for x
    x = 99,982,362,753.42/356,302.72
  6. Step 6: Final answer
    x = 280,610.72

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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.