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Finding the Fourth Proportional to 438,797.28, 658,221.44 and 123,278.79

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Solution

The fourth proportional to 438,797.28, 658,221.44 and 123,278.79 is: 184,925.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,797.28 : 658,221.44 = 123,278.79 : x
  2. Step 2: Convert to fraction form
    438,797.28/658,221.44 = 123,278.79/x
  3. Step 3: Cross multiply
    438,797.28x = 658,221.44 × 123,278.79
  4. Step 4: Simplify right side
    438,797.28x = 81,144,742,675.26
  5. Step 5: Solve for x
    x = 81,144,742,675.26/438,797.28
  6. Step 6: Final answer
    x = 184,925.35

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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.