Home / 283,638.43-391,421.04-156,314.03

Finding the Fourth Proportional to 283,638.43, 391,421.04 and 156,314.03

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Solution

The fourth proportional to 283,638.43, 391,421.04 and 156,314.03 is: 215,713.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,638.43 : 391,421.04 = 156,314.03 : x
  2. Step 2: Convert to fraction form
    283,638.43/391,421.04 = 156,314.03/x
  3. Step 3: Cross multiply
    283,638.43x = 391,421.04 × 156,314.03
  4. Step 4: Simplify right side
    283,638.43x = 61,184,597,645.91
  5. Step 5: Solve for x
    x = 61,184,597,645.91/283,638.43
  6. Step 6: Final answer
    x = 215,713.36

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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.