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Finding the Fourth Proportional to 445,639.33, 668,505.87 and 130,097.15

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Solution

The fourth proportional to 445,639.33, 668,505.87 and 130,097.15 is: 195,159.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,639.33 : 668,505.87 = 130,097.15 : x
  2. Step 2: Convert to fraction form
    445,639.33/668,505.87 = 130,097.15/x
  3. Step 3: Cross multiply
    445,639.33x = 668,505.87 × 130,097.15
  4. Step 4: Simplify right side
    445,639.33x = 86,970,705,102.74
  5. Step 5: Solve for x
    x = 86,970,705,102.74/445,639.33
  6. Step 6: Final answer
    x = 195,159.40

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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.