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Finding the Fourth Proportional to 217,224,203.20, 325,836,304.80 and 80,881,374.40

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Solution

The fourth proportional to 217,224,203.20, 325,836,304.80 and 80,881,374.40 is: 121,322,061.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,224,203.20 : 325,836,304.80 = 80,881,374.40 : x
  2. Step 2: Convert to fraction form
    217,224,203.20/325,836,304.80 = 80,881,374.40/x
  3. Step 3: Cross multiply
    217,224,203.20x = 325,836,304.80 × 80,881,374.40
  4. Step 4: Simplify right side
    217,224,203.20x = 26,354,088,161,641,320
  5. Step 5: Solve for x
    x = 26,354,088,161,641,320/217,224,203.20
  6. Step 6: Final answer
    x = 121,322,061.60

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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.