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Finding the Fourth Proportional to 258,193.73, 356,306.65 and 143,471.93

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Solution

The fourth proportional to 258,193.73, 356,306.65 and 143,471.93 is: 197,990.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,193.73 : 356,306.65 = 143,471.93 : x
  2. Step 2: Convert to fraction form
    258,193.73/356,306.65 = 143,471.93/x
  3. Step 3: Cross multiply
    258,193.73x = 356,306.65 × 143,471.93
  4. Step 4: Simplify right side
    258,193.73x = 51,120,000,607.12
  5. Step 5: Solve for x
    x = 51,120,000,607.12/258,193.73
  6. Step 6: Final answer
    x = 197,990.87

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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.