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Finding the Fourth Proportional to 398,834.25, 598,251.06 and 118,351.50

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Solution

The fourth proportional to 398,834.25, 598,251.06 and 118,351.50 is: 177,527.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,834.25 : 598,251.06 = 118,351.50 : x
  2. Step 2: Convert to fraction form
    398,834.25/598,251.06 = 118,351.50/x
  3. Step 3: Cross multiply
    398,834.25x = 598,251.06 × 118,351.50
  4. Step 4: Simplify right side
    398,834.25x = 70,803,908,084.15
  5. Step 5: Solve for x
    x = 70,803,908,084.15/398,834.25
  6. Step 6: Final answer
    x = 177,527.15

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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.