Home / 253,822,011.30-380,761,010.55-81,269,460.90

Finding the Fourth Proportional to 253,822,011.30, 380,761,010.55 and 81,269,460.90

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Solution

The fourth proportional to 253,822,011.30, 380,761,010.55 and 81,269,460.90 is: 121,913,154.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,822,011.30 : 380,761,010.55 = 81,269,460.90 : x
  2. Step 2: Convert to fraction form
    253,822,011.30/380,761,010.55 = 81,269,460.90/x
  3. Step 3: Cross multiply
    253,822,011.30x = 380,761,010.55 × 81,269,460.90
  4. Step 4: Simplify right side
    253,822,011.30x = 30,944,242,059,137,716
  5. Step 5: Solve for x
    x = 30,944,242,059,137,716/253,822,011.30
  6. Step 6: Final answer
    x = 121,913,154.42

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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.