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Finding the Fourth Proportional to 250,429.94, 345,392.26 and 220,151.06

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Solution

The fourth proportional to 250,429.94, 345,392.26 and 220,151.06 is: 303,631.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,429.94 : 345,392.26 = 220,151.06 : x
  2. Step 2: Convert to fraction form
    250,429.94/345,392.26 = 220,151.06/x
  3. Step 3: Cross multiply
    250,429.94x = 345,392.26 × 220,151.06
  4. Step 4: Simplify right side
    250,429.94x = 76,038,472,154.80
  5. Step 5: Solve for x
    x = 76,038,472,154.80/250,429.94
  6. Step 6: Final answer
    x = 303,631.71

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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.