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Finding the Fourth Proportional to 387,628.80, 581,011.20 and 150,892.80

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Solution

The fourth proportional to 387,628.80, 581,011.20 and 150,892.80 is: 226,171.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,628.80 : 581,011.20 = 150,892.80 : x
  2. Step 2: Convert to fraction form
    387,628.80/581,011.20 = 150,892.80/x
  3. Step 3: Cross multiply
    387,628.80x = 581,011.20 × 150,892.80
  4. Step 4: Simplify right side
    387,628.80x = 87,670,406,799.36
  5. Step 5: Solve for x
    x = 87,670,406,799.36/387,628.80
  6. Step 6: Final answer
    x = 226,171.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.