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Finding the Fourth Proportional to 215,909.70, 323,767.35 and 97,520.10

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Solution

The fourth proportional to 215,909.70, 323,767.35 and 97,520.10 is: 146,236.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,909.70 : 323,767.35 = 97,520.10 : x
  2. Step 2: Convert to fraction form
    215,909.70/323,767.35 = 97,520.10/x
  3. Step 3: Cross multiply
    215,909.70x = 323,767.35 × 97,520.10
  4. Step 4: Simplify right side
    215,909.70x = 31,573,824,348.74
  5. Step 5: Solve for x
    x = 31,573,824,348.74/215,909.70
  6. Step 6: Final answer
    x = 146,236.25

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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.