Home / 659,440.45-989,142.13-210,188.24

Finding the Fourth Proportional to 659,440.45, 989,142.13 and 210,188.24

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Solution

The fourth proportional to 659,440.45, 989,142.13 and 210,188.24 is: 315,276.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,440.45 : 989,142.13 = 210,188.24 : x
  2. Step 2: Convert to fraction form
    659,440.45/989,142.13 = 210,188.24/x
  3. Step 3: Cross multiply
    659,440.45x = 989,142.13 × 210,188.24
  4. Step 4: Simplify right side
    659,440.45x = 207,906,043,414.55
  5. Step 5: Solve for x
    x = 207,906,043,414.55/659,440.45
  6. Step 6: Final answer
    x = 315,276.45

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Double scale
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Similar ratio
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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.