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Finding the Fourth Proportional to 283,608.40, 425,310.20 and 143,320.40

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Solution

The fourth proportional to 283,608.40, 425,310.20 and 143,320.40 is: 214,928.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,608.40 : 425,310.20 = 143,320.40 : x
  2. Step 2: Convert to fraction form
    283,608.40/425,310.20 = 143,320.40/x
  3. Step 3: Cross multiply
    283,608.40x = 425,310.20 × 143,320.40
  4. Step 4: Simplify right side
    283,608.40x = 60,955,627,988.08
  5. Step 5: Solve for x
    x = 60,955,627,988.08/283,608.40
  6. Step 6: Final answer
    x = 214,928.85

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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.