Home / 318,711.12-439,811.82-175,470.72

Finding the Fourth Proportional to 318,711.12, 439,811.82 and 175,470.72

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Solution

The fourth proportional to 318,711.12, 439,811.82 and 175,470.72 is: 242,144.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,711.12 : 439,811.82 = 175,470.72 : x
  2. Step 2: Convert to fraction form
    318,711.12/439,811.82 = 175,470.72/x
  3. Step 3: Cross multiply
    318,711.12x = 439,811.82 × 175,470.72
  4. Step 4: Simplify right side
    318,711.12x = 77,174,096,719.91
  5. Step 5: Solve for x
    x = 77,174,096,719.91/318,711.12
  6. Step 6: Final answer
    x = 242,144.35

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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.