Home / 128,345,276.25-280,209,555.75

Finding the Third Proportional to 128,345,276.25 and 280,209,555.75

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Solution

The third proportional to 128,345,276.25 and 280,209,555.75 is: 611,766,926.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,345,276.25 : 280,209,555.75 = 280,209,555.75 : x
  2. Step 2: Convert to fraction form
    128,345,276.25/280,209,555.75 = 280,209,555.75/x
  3. Step 3: Cross multiply
    128,345,276.25x = 280,209,555.75 × 280,209,555.75
  4. Step 4: Simplify right side
    128,345,276.25x = 78,517,395,133,612,352
  5. Step 5: Solve for x
    x = 78,517,395,133,612,352/128,345,276.25
  6. Step 6: Final answer
    x = 611,766,926.12

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.