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Finding the Fourth Proportional to 279,974.60, 386,366.76 and 152,652.32

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Solution

The fourth proportional to 279,974.60, 386,366.76 and 152,652.32 is: 210,661.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,974.60 : 386,366.76 = 152,652.32 : x
  2. Step 2: Convert to fraction form
    279,974.60/386,366.76 = 152,652.32/x
  3. Step 3: Cross multiply
    279,974.60x = 386,366.76 × 152,652.32
  4. Step 4: Simplify right side
    279,974.60x = 58,979,782,284.88
  5. Step 5: Solve for x
    x = 58,979,782,284.88/279,974.60
  6. Step 6: Final answer
    x = 210,661.19

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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.