Home / 219,024.60-328,536.90-85,909.20

Finding the Fourth Proportional to 219,024.60, 328,536.90 and 85,909.20

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Solution

The fourth proportional to 219,024.60, 328,536.90 and 85,909.20 is: 128,863.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,024.60 : 328,536.90 = 85,909.20 : x
  2. Step 2: Convert to fraction form
    219,024.60/328,536.90 = 85,909.20/x
  3. Step 3: Cross multiply
    219,024.60x = 328,536.90 × 85,909.20
  4. Step 4: Simplify right side
    219,024.60x = 28,224,342,249.48
  5. Step 5: Solve for x
    x = 28,224,342,249.48/219,024.60
  6. Step 6: Final answer
    x = 128,863.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.