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Finding the Fourth Proportional to 283,520.70, 425,281.05 and 257,276.70

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Solution

The fourth proportional to 283,520.70, 425,281.05 and 257,276.70 is: 385,915.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,520.70 : 425,281.05 = 257,276.70 : x
  2. Step 2: Convert to fraction form
    283,520.70/425,281.05 = 257,276.70/x
  3. Step 3: Cross multiply
    283,520.70x = 425,281.05 × 257,276.70
  4. Step 4: Simplify right side
    283,520.70x = 109,414,905,116.54
  5. Step 5: Solve for x
    x = 109,414,905,116.54/283,520.70
  6. Step 6: Final answer
    x = 385,915.05

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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.