Home / 283,628.98-391,416.20-156,312.78

Finding the Fourth Proportional to 283,628.98, 391,416.20 and 156,312.78

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Solution

The fourth proportional to 283,628.98, 391,416.20 and 156,312.78 is: 215,716.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,628.98 : 391,416.20 = 156,312.78 : x
  2. Step 2: Convert to fraction form
    283,628.98/391,416.20 = 156,312.78/x
  3. Step 3: Cross multiply
    283,628.98x = 391,416.20 × 156,312.78
  4. Step 4: Simplify right side
    283,628.98x = 61,183,354,359.04
  5. Step 5: Solve for x
    x = 61,183,354,359.04/283,628.98
  6. Step 6: Final answer
    x = 215,716.16

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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.