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Finding the Fourth Proportional to 665,540.70, 998,937.45 and 350,223.90

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Solution

The fourth proportional to 665,540.70, 998,937.45 and 350,223.90 is: 525,665.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,540.70 : 998,937.45 = 350,223.90 : x
  2. Step 2: Convert to fraction form
    665,540.70/998,937.45 = 350,223.90/x
  3. Step 3: Cross multiply
    665,540.70x = 998,937.45 × 350,223.90
  4. Step 4: Simplify right side
    665,540.70x = 349,851,769,595.06
  5. Step 5: Solve for x
    x = 349,851,769,595.06/665,540.70
  6. Step 6: Final answer
    x = 525,665.48

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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.