Home / 318,748.04-475,789.95-280,915.16

Finding the Fourth Proportional to 318,748.04, 475,789.95 and 280,915.16

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Solution

The fourth proportional to 318,748.04, 475,789.95 and 280,915.16 is: 419,317.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,748.04 : 475,789.95 = 280,915.16 : x
  2. Step 2: Convert to fraction form
    318,748.04/475,789.95 = 280,915.16/x
  3. Step 3: Cross multiply
    318,748.04x = 475,789.95 × 280,915.16
  4. Step 4: Simplify right side
    318,748.04x = 133,656,609,930.64
  5. Step 5: Solve for x
    x = 133,656,609,930.64/318,748.04
  6. Step 6: Final answer
    x = 419,317.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.