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Finding the Fourth Proportional to 380,995.52, 571,437.12 and 100,532.48

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Solution

The fourth proportional to 380,995.52, 571,437.12 and 100,532.48 is: 150,783.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,995.52 : 571,437.12 = 100,532.48 : x
  2. Step 2: Convert to fraction form
    380,995.52/571,437.12 = 100,532.48/x
  3. Step 3: Cross multiply
    380,995.52x = 571,437.12 × 100,532.48
  4. Step 4: Simplify right side
    380,995.52x = 57,447,990,837.66
  5. Step 5: Solve for x
    x = 57,447,990,837.66/380,995.52
  6. Step 6: Final answer
    x = 150,783.90

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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.