Home / 279,146.48-418,719.95-68,784.44

Finding the Fourth Proportional to 279,146.48, 418,719.95 and 68,784.44

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Solution

The fourth proportional to 279,146.48, 418,719.95 and 68,784.44 is: 103,176.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,146.48 : 418,719.95 = 68,784.44 : x
  2. Step 2: Convert to fraction form
    279,146.48/418,719.95 = 68,784.44/x
  3. Step 3: Cross multiply
    279,146.48x = 418,719.95 × 68,784.44
  4. Step 4: Simplify right side
    279,146.48x = 28,801,417,277.58
  5. Step 5: Solve for x
    x = 28,801,417,277.58/279,146.48
  6. Step 6: Final answer
    x = 103,176.72

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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.