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Finding the Fourth Proportional to 250,344.74, 345,359.94 and 221,693.60

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Solution

The fourth proportional to 250,344.74, 345,359.94 and 221,693.60 is: 305,834.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,344.74 : 345,359.94 = 221,693.60 : x
  2. Step 2: Convert to fraction form
    250,344.74/345,359.94 = 221,693.60/x
  3. Step 3: Cross multiply
    250,344.74x = 345,359.94 × 221,693.60
  4. Step 4: Simplify right side
    250,344.74x = 76,564,088,394.38
  5. Step 5: Solve for x
    x = 76,564,088,394.38/250,344.74
  6. Step 6: Final answer
    x = 305,834.62

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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.