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Finding the Fourth Proportional to 283,532.55, 391,270.55 and 156,212.70

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Solution

The fourth proportional to 283,532.55, 391,270.55 and 156,212.70 is: 215,571.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,532.55 : 391,270.55 = 156,212.70 : x
  2. Step 2: Convert to fraction form
    283,532.55/391,270.55 = 156,212.70/x
  3. Step 3: Cross multiply
    283,532.55x = 391,270.55 × 156,212.70
  4. Step 4: Simplify right side
    283,532.55x = 61,121,428,264.92
  5. Step 5: Solve for x
    x = 61,121,428,264.92/283,532.55
  6. Step 6: Final answer
    x = 215,571.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.