Home / 280,314,314.10-420,471,471.15-165,428,579.70

Finding the Fourth Proportional to 280,314,314.10, 420,471,471.15 and 165,428,579.70

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Solution

The fourth proportional to 280,314,314.10, 420,471,471.15 and 165,428,579.70 is: 248,142,869.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,314,314.10 : 420,471,471.15 = 165,428,579.70 : x
  2. Step 2: Convert to fraction form
    280,314,314.10/420,471,471.15 = 165,428,579.70/x
  3. Step 3: Cross multiply
    280,314,314.10x = 420,471,471.15 × 165,428,579.70
  4. Step 4: Simplify right side
    280,314,314.10x = 69,557,998,276,714,016
  5. Step 5: Solve for x
    x = 69,557,998,276,714,016/280,314,314.10
  6. Step 6: Final answer
    x = 248,142,869.55

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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.