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Finding the Fourth Proportional to 283,757.60, 425,420.40 and 143,616.80

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Solution

The fourth proportional to 283,757.60, 425,420.40 and 143,616.80 is: 215,315.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,757.60 : 425,420.40 = 143,616.80 : x
  2. Step 2: Convert to fraction form
    283,757.60/425,420.40 = 143,616.80/x
  3. Step 3: Cross multiply
    283,757.60x = 425,420.40 × 143,616.80
  4. Step 4: Simplify right side
    283,757.60x = 61,097,516,502.72
  5. Step 5: Solve for x
    x = 61,097,516,502.72/283,757.60
  6. Step 6: Final answer
    x = 215,315.88

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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.