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Finding the Fourth Proportional to 665,277.20, 998,542.20 and 349,960.40

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Solution

The fourth proportional to 665,277.20, 998,542.20 and 349,960.40 is: 525,270.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,277.20 : 998,542.20 = 349,960.40 : x
  2. Step 2: Convert to fraction form
    665,277.20/998,542.20 = 349,960.40/x
  3. Step 3: Cross multiply
    665,277.20x = 998,542.20 × 349,960.40
  4. Step 4: Simplify right side
    665,277.20x = 349,450,227,728.88
  5. Step 5: Solve for x
    x = 349,450,227,728.88/665,277.20
  6. Step 6: Final answer
    x = 525,270.11

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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.