Home / 406,672,896.20-561,214,278.42-221,033,856.20

Finding the Fourth Proportional to 406,672,896.20, 561,214,278.42 and 221,033,856.20

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Solution

The fourth proportional to 406,672,896.20, 561,214,278.42 and 221,033,856.20 is: 305,029,809.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,672,896.20 : 561,214,278.42 = 221,033,856.20 : x
  2. Step 2: Convert to fraction form
    406,672,896.20/561,214,278.42 = 221,033,856.20/x
  3. Step 3: Cross multiply
    406,672,896.20x = 561,214,278.42 × 221,033,856.20
  4. Step 4: Simplify right side
    406,672,896.20x = 124,047,356,113,673,024
  5. Step 5: Solve for x
    x = 124,047,356,113,673,024/406,672,896.20
  6. Step 6: Final answer
    x = 305,029,809.64

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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.