Home / 283,637.39-391,419.60-156,312.98

Finding the Fourth Proportional to 283,637.39, 391,419.60 and 156,312.98

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Solution

The fourth proportional to 283,637.39, 391,419.60 and 156,312.98 is: 215,711.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,637.39 : 391,419.60 = 156,312.98 : x
  2. Step 2: Convert to fraction form
    283,637.39/391,419.60 = 156,312.98/x
  3. Step 3: Cross multiply
    283,637.39x = 391,419.60 × 156,312.98
  4. Step 4: Simplify right side
    283,637.39x = 61,183,962,149.31
  5. Step 5: Solve for x
    x = 61,183,962,149.31/283,637.39
  6. Step 6: Final answer
    x = 215,711.91

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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.