Home / 266,920,512.90-400,380,769.35-209,589,620.10

Finding the Fourth Proportional to 266,920,512.90, 400,380,769.35 and 209,589,620.10

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Solution

The fourth proportional to 266,920,512.90, 400,380,769.35 and 209,589,620.10 is: 314,384,430.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,920,512.90 : 400,380,769.35 = 209,589,620.10 : x
  2. Step 2: Convert to fraction form
    266,920,512.90/400,380,769.35 = 209,589,620.10/x
  3. Step 3: Cross multiply
    266,920,512.90x = 400,380,769.35 × 209,589,620.10
  4. Step 4: Simplify right side
    266,920,512.90x = 83,915,653,343,412,224
  5. Step 5: Solve for x
    x = 83,915,653,343,412,224/266,920,512.90
  6. Step 6: Final answer
    x = 314,384,430.15

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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.