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Finding the Fourth Proportional to 486,929.40, 730,612.80 and 220,552.80

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Solution

The fourth proportional to 486,929.40, 730,612.80 and 220,552.80 is: 330,928.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,929.40 : 730,612.80 = 220,552.80 : x
  2. Step 2: Convert to fraction form
    486,929.40/730,612.80 = 220,552.80/x
  3. Step 3: Cross multiply
    486,929.40x = 730,612.80 × 220,552.80
  4. Step 4: Simplify right side
    486,929.40x = 161,138,698,755.84
  5. Step 5: Solve for x
    x = 161,138,698,755.84/486,929.40
  6. Step 6: Final answer
    x = 330,928.26

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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.