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Finding the Fourth Proportional to 665,329.20, 998,620.20 and 350,012.40

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Solution

The fourth proportional to 665,329.20, 998,620.20 and 350,012.40 is: 525,348.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,329.20 : 998,620.20 = 350,012.40 : x
  2. Step 2: Convert to fraction form
    665,329.20/998,620.20 = 350,012.40/x
  3. Step 3: Cross multiply
    665,329.20x = 998,620.20 × 350,012.40
  4. Step 4: Simplify right side
    665,329.20x = 349,529,452,890.48
  5. Step 5: Solve for x
    x = 349,529,452,890.48/665,329.20
  6. Step 6: Final answer
    x = 525,348.13

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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.