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Finding the Fourth Proportional to 288,588.11, 398,250.96 and 161,263.71

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Solution

The fourth proportional to 288,588.11, 398,250.96 and 161,263.71 is: 222,543.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,588.11 : 398,250.96 = 161,263.71 : x
  2. Step 2: Convert to fraction form
    288,588.11/398,250.96 = 161,263.71/x
  3. Step 3: Cross multiply
    288,588.11x = 398,250.96 × 161,263.71
  4. Step 4: Simplify right side
    288,588.11x = 64,223,425,329.41
  5. Step 5: Solve for x
    x = 64,223,425,329.41/288,588.11
  6. Step 6: Final answer
    x = 222,543.56

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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.