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Finding the Fourth Proportional to 279,854.15, 386,198.84 and 158,995.63

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Solution

The fourth proportional to 279,854.15, 386,198.84 and 158,995.63 is: 219,414.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,854.15 : 386,198.84 = 158,995.63 : x
  2. Step 2: Convert to fraction form
    279,854.15/386,198.84 = 158,995.63/x
  3. Step 3: Cross multiply
    279,854.15x = 386,198.84 × 158,995.63
  4. Step 4: Simplify right side
    279,854.15x = 61,403,927,303.06
  5. Step 5: Solve for x
    x = 61,403,927,303.06/279,854.15
  6. Step 6: Final answer
    x = 219,414.04

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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.