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Finding the Fourth Proportional to 279,094.24, 418,637.28 and 68,734.24

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Solution

The fourth proportional to 279,094.24, 418,637.28 and 68,734.24 is: 103,100.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,094.24 : 418,637.28 = 68,734.24 : x
  2. Step 2: Convert to fraction form
    279,094.24/418,637.28 = 68,734.24/x
  3. Step 3: Cross multiply
    279,094.24x = 418,637.28 × 68,734.24
  4. Step 4: Simplify right side
    279,094.24x = 28,774,715,276.47
  5. Step 5: Solve for x
    x = 28,774,715,276.47/279,094.24
  6. Step 6: Final answer
    x = 103,100.36

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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.