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Finding the Fourth Proportional to 489,842.40, 734,180.40 and 205,532.40

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Solution

The fourth proportional to 489,842.40, 734,180.40 and 205,532.40 is: 308,053.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,842.40 : 734,180.40 = 205,532.40 : x
  2. Step 2: Convert to fraction form
    489,842.40/734,180.40 = 205,532.40/x
  3. Step 3: Cross multiply
    489,842.40x = 734,180.40 × 205,532.40
  4. Step 4: Simplify right side
    489,842.40x = 150,897,859,644.96
  5. Step 5: Solve for x
    x = 150,897,859,644.96/489,842.40
  6. Step 6: Final answer
    x = 308,053.90

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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.