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Finding the Fourth Proportional to 250,470.12, 345,684.21 and 155,007.57

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Solution

The fourth proportional to 250,470.12, 345,684.21 and 155,007.57 is: 213,932.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,470.12 : 345,684.21 = 155,007.57 : x
  2. Step 2: Convert to fraction form
    250,470.12/345,684.21 = 155,007.57/x
  3. Step 3: Cross multiply
    250,470.12x = 345,684.21 × 155,007.57
  4. Step 4: Simplify right side
    250,470.12x = 53,583,669,379.47
  5. Step 5: Solve for x
    x = 53,583,669,379.47/250,470.12
  6. Step 6: Final answer
    x = 213,932.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.