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Finding the Fourth Proportional to 457,227.40, 686,074.50 and 220,772.20

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Solution

The fourth proportional to 457,227.40, 686,074.50 and 220,772.20 is: 331,271.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,227.40 : 686,074.50 = 220,772.20 : x
  2. Step 2: Convert to fraction form
    457,227.40/686,074.50 = 220,772.20/x
  3. Step 3: Cross multiply
    457,227.40x = 686,074.50 × 220,772.20
  4. Step 4: Simplify right side
    457,227.40x = 151,466,176,728.90
  5. Step 5: Solve for x
    x = 151,466,176,728.90/457,227.40
  6. Step 6: Final answer
    x = 331,271.00

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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.