Home / 283,780.18-391,619.37-156,460.42

Finding the Fourth Proportional to 283,780.18, 391,619.37 and 156,460.42

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Solution

The fourth proportional to 283,780.18, 391,619.37 and 156,460.42 is: 215,916.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,780.18 : 391,619.37 = 156,460.42 : x
  2. Step 2: Convert to fraction form
    283,780.18/391,619.37 = 156,460.42/x
  3. Step 3: Cross multiply
    283,780.18x = 391,619.37 × 156,460.42
  4. Step 4: Simplify right side
    283,780.18x = 61,272,931,110.34
  5. Step 5: Solve for x
    x = 61,272,931,110.34/283,780.18
  6. Step 6: Final answer
    x = 215,916.88

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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.