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Finding the Fourth Proportional to 219,591.72, 329,498.12 and 86,567.44

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Solution

The fourth proportional to 219,591.72, 329,498.12 and 86,567.44 is: 129,894.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,591.72 : 329,498.12 = 86,567.44 : x
  2. Step 2: Convert to fraction form
    219,591.72/329,498.12 = 86,567.44/x
  3. Step 3: Cross multiply
    219,591.72x = 329,498.12 × 86,567.44
  4. Step 4: Simplify right side
    219,591.72x = 28,523,808,733.21
  5. Step 5: Solve for x
    x = 28,523,808,733.21/219,591.72
  6. Step 6: Final answer
    x = 129,894.74

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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.