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Finding the Fourth Proportional to 262,168.90, 392,670.15 and 215,512.90

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Solution

The fourth proportional to 262,168.90, 392,670.15 and 215,512.90 is: 322,789.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,168.90 : 392,670.15 = 215,512.90 : x
  2. Step 2: Convert to fraction form
    262,168.90/392,670.15 = 215,512.90/x
  3. Step 3: Cross multiply
    262,168.90x = 392,670.15 × 215,512.90
  4. Step 4: Simplify right side
    262,168.90x = 84,625,482,769.94
  5. Step 5: Solve for x
    x = 84,625,482,769.94/262,168.90
  6. Step 6: Final answer
    x = 322,789.94

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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.