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Finding the Fourth Proportional to 379,437.44, 569,449.92 and 142,995.20

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Solution

The fourth proportional to 379,437.44, 569,449.92 and 142,995.20 is: 214,603.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,437.44 : 569,449.92 = 142,995.20 : x
  2. Step 2: Convert to fraction form
    379,437.44/569,449.92 = 142,995.20/x
  3. Step 3: Cross multiply
    379,437.44x = 569,449.92 × 142,995.20
  4. Step 4: Simplify right side
    379,437.44x = 81,428,605,200.38
  5. Step 5: Solve for x
    x = 81,428,605,200.38/379,437.44
  6. Step 6: Final answer
    x = 214,603.51

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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.