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Finding the Fourth Proportional to 207,990.40, 311,985.61 and 58,252.89

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Solution

The fourth proportional to 207,990.40, 311,985.61 and 58,252.89 is: 87,379.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,990.40 : 311,985.61 = 58,252.89 : x
  2. Step 2: Convert to fraction form
    207,990.40/311,985.61 = 58,252.89/x
  3. Step 3: Cross multiply
    207,990.40x = 311,985.61 × 58,252.89
  4. Step 4: Simplify right side
    207,990.40x = 18,174,062,690.31
  5. Step 5: Solve for x
    x = 18,174,062,690.31/207,990.40
  6. Step 6: Final answer
    x = 87,379.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.