Home / 318,639.18-439,721.96-175,398.50

Finding the Fourth Proportional to 318,639.18, 439,721.96 and 175,398.50

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Solution

The fourth proportional to 318,639.18, 439,721.96 and 175,398.50 is: 242,049.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,639.18 : 439,721.96 = 175,398.50 : x
  2. Step 2: Convert to fraction form
    318,639.18/439,721.96 = 175,398.50/x
  3. Step 3: Cross multiply
    318,639.18x = 439,721.96 × 175,398.50
  4. Step 4: Simplify right side
    318,639.18x = 77,126,572,201.06
  5. Step 5: Solve for x
    x = 77,126,572,201.06/318,639.18
  6. Step 6: Final answer
    x = 242,049.87

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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.