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Finding the Fourth Proportional to 258,330, 356,474.72 and 143,599.62

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Solution

The fourth proportional to 258,330, 356,474.72 and 143,599.62 is: 198,155.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,330 : 356,474.72 = 143,599.62 : x
  2. Step 2: Convert to fraction form
    258,330/356,474.72 = 143,599.62/x
  3. Step 3: Cross multiply
    258,330x = 356,474.72 × 143,599.62
  4. Step 4: Simplify right side
    258,330x = 51,189,634,331.61
  5. Step 5: Solve for x
    x = 51,189,634,331.61/258,330
  6. Step 6: Final answer
    x = 198,155.98

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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.