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Finding the Fourth Proportional to 665,520.14, 998,335.56 and 216,231.06

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Solution

The fourth proportional to 665,520.14, 998,335.56 and 216,231.06 is: 324,364.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,520.14 : 998,335.56 = 216,231.06 : x
  2. Step 2: Convert to fraction form
    665,520.14/998,335.56 = 216,231.06/x
  3. Step 3: Cross multiply
    665,520.14x = 998,335.56 × 216,231.06
  4. Step 4: Simplify right side
    665,520.14x = 215,871,156,374.49
  5. Step 5: Solve for x
    x = 215,871,156,374.49/665,520.14
  6. Step 6: Final answer
    x = 324,364.57

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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.