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Finding the Fourth Proportional to 279,340.25, 385,498.30 and 158,486.63

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Solution

The fourth proportional to 279,340.25, 385,498.30 and 158,486.63 is: 218,716.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,340.25 : 385,498.30 = 158,486.63 : x
  2. Step 2: Convert to fraction form
    279,340.25/385,498.30 = 158,486.63/x
  3. Step 3: Cross multiply
    279,340.25x = 385,498.30 × 158,486.63
  4. Step 4: Simplify right side
    279,340.25x = 61,096,327,005.26
  5. Step 5: Solve for x
    x = 61,096,327,005.26/279,340.25
  6. Step 6: Final answer
    x = 218,716.52

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1.5x scale

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.