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Finding the Fourth Proportional to 356,449.28, 534,632.28 and 143,208.56

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Solution

The fourth proportional to 356,449.28, 534,632.28 and 143,208.56 is: 214,796.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,449.28 : 534,632.28 = 143,208.56 : x
  2. Step 2: Convert to fraction form
    356,449.28/534,632.28 = 143,208.56/x
  3. Step 3: Cross multiply
    356,449.28x = 534,632.28 × 143,208.56
  4. Step 4: Simplify right side
    356,449.28x = 76,563,918,948.32
  5. Step 5: Solve for x
    x = 76,563,918,948.32/356,449.28
  6. Step 6: Final answer
    x = 214,796.11

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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.