Home / 687,635.12-1,031,219.10-238,251.11

Finding the Fourth Proportional to 687,635.12, 1,031,219.10 and 238,251.11

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Solution

The fourth proportional to 687,635.12, 1,031,219.10 and 238,251.11 is: 357,295.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,635.12 : 1,031,219.10 = 238,251.11 : x
  2. Step 2: Convert to fraction form
    687,635.12/1,031,219.10 = 238,251.11/x
  3. Step 3: Cross multiply
    687,635.12x = 1,031,219.10 × 238,251.11
  4. Step 4: Simplify right side
    687,635.12x = 245,689,090,072.11
  5. Step 5: Solve for x
    x = 245,689,090,072.11/687,635.12
  6. Step 6: Final answer
    x = 357,295.73

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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.