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Finding the Fourth Proportional to 385,855.38, 532,384.25 and 222,561.81

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Solution

The fourth proportional to 385,855.38, 532,384.25 and 222,561.81 is: 307,079.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,855.38 : 532,384.25 = 222,561.81 : x
  2. Step 2: Convert to fraction form
    385,855.38/532,384.25 = 222,561.81/x
  3. Step 3: Cross multiply
    385,855.38x = 532,384.25 × 222,561.81
  4. Step 4: Simplify right side
    385,855.38x = 118,488,401,182.68
  5. Step 5: Solve for x
    x = 118,488,401,182.68/385,855.38
  6. Step 6: Final answer
    x = 307,079.82

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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.