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Finding the Fourth Proportional to 279,412.64, 385,597.86 and 172,044.62

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Solution

The fourth proportional to 279,412.64, 385,597.86 and 172,044.62 is: 237,426.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,412.64 : 385,597.86 = 172,044.62 : x
  2. Step 2: Convert to fraction form
    279,412.64/385,597.86 = 172,044.62/x
  3. Step 3: Cross multiply
    279,412.64x = 385,597.86 × 172,044.62
  4. Step 4: Simplify right side
    279,412.64x = 66,340,037,296.51
  5. Step 5: Solve for x
    x = 66,340,037,296.51/279,412.64
  6. Step 6: Final answer
    x = 237,426.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.