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Finding the Fourth Proportional to 387,808.83, 535,178.79 and 226,631.70

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Solution

The fourth proportional to 387,808.83, 535,178.79 and 226,631.70 is: 312,753.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,808.83 : 535,178.79 = 226,631.70 : x
  2. Step 2: Convert to fraction form
    387,808.83/535,178.79 = 226,631.70/x
  3. Step 3: Cross multiply
    387,808.83x = 535,178.79 × 226,631.70
  4. Step 4: Simplify right side
    387,808.83x = 121,288,478,981.64
  5. Step 5: Solve for x
    x = 121,288,478,981.64/387,808.83
  6. Step 6: Final answer
    x = 312,753.27

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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.