Home / 291,287,949.79-401,983,296.41-159,137,505.67

Finding the Fourth Proportional to 291,287,949.79, 401,983,296.41 and 159,137,505.67

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Solution

The fourth proportional to 291,287,949.79, 401,983,296.41 and 159,137,505.67 is: 219,612,995.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,287,949.79 : 401,983,296.41 = 159,137,505.67 : x
  2. Step 2: Convert to fraction form
    291,287,949.79/401,983,296.41 = 159,137,505.67/x
  3. Step 3: Cross multiply
    291,287,949.79x = 401,983,296.41 × 159,137,505.67
  4. Step 4: Simplify right side
    291,287,949.79x = 63,970,619,111,691,664
  5. Step 5: Solve for x
    x = 63,970,619,111,691,664/291,287,949.79
  6. Step 6: Final answer
    x = 219,612,995.17

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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.