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Finding the Fourth Proportional to 373,220.80, 560,414.40 and 215,756.80

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Solution

The fourth proportional to 373,220.80, 560,414.40 and 215,756.80 is: 323,972.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,220.80 : 560,414.40 = 215,756.80 : x
  2. Step 2: Convert to fraction form
    373,220.80/560,414.40 = 215,756.80/x
  3. Step 3: Cross multiply
    373,220.80x = 560,414.40 × 215,756.80
  4. Step 4: Simplify right side
    373,220.80x = 120,913,217,617.92
  5. Step 5: Solve for x
    x = 120,913,217,617.92/373,220.80
  6. Step 6: Final answer
    x = 323,972.34

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1.5x scale

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.