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Finding the Fourth Proportional to 283,765.20, 425,064.60 and 143,602.80

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Solution

The fourth proportional to 283,765.20, 425,064.60 and 143,602.80 is: 215,109.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,765.20 : 425,064.60 = 143,602.80 : x
  2. Step 2: Convert to fraction form
    283,765.20/425,064.60 = 143,602.80/x
  3. Step 3: Cross multiply
    283,765.20x = 425,064.60 × 143,602.80
  4. Step 4: Simplify right side
    283,765.20x = 61,040,466,740.88
  5. Step 5: Solve for x
    x = 61,040,466,740.88/283,765.20
  6. Step 6: Final answer
    x = 215,109.06

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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.