Home / 318,780.85-439,884.13-180,915.88

Finding the Fourth Proportional to 318,780.85, 439,884.13 and 180,915.88

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Solution

The fourth proportional to 318,780.85, 439,884.13 and 180,915.88 is: 249,644.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,780.85 : 439,884.13 = 180,915.88 : x
  2. Step 2: Convert to fraction form
    318,780.85/439,884.13 = 180,915.88/x
  3. Step 3: Cross multiply
    318,780.85x = 439,884.13 × 180,915.88
  4. Step 4: Simplify right side
    318,780.85x = 79,582,023,797.13
  5. Step 5: Solve for x
    x = 79,582,023,797.13/318,780.85
  6. Step 6: Final answer
    x = 249,644.93

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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.