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Finding the Fourth Proportional to 332,855.20, 499,347.60 and 143,315.20

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Solution

The fourth proportional to 332,855.20, 499,347.60 and 143,315.20 is: 215,000.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,855.20 : 499,347.60 = 143,315.20 : x
  2. Step 2: Convert to fraction form
    332,855.20/499,347.60 = 143,315.20/x
  3. Step 3: Cross multiply
    332,855.20x = 499,347.60 × 143,315.20
  4. Step 4: Simplify right side
    332,855.20x = 71,564,101,163.52
  5. Step 5: Solve for x
    x = 71,564,101,163.52/332,855.20
  6. Step 6: Final answer
    x = 215,000.70

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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.