Home / 291,287,959.32-401,983,309.52-159,137,515.20

Finding the Fourth Proportional to 291,287,959.32, 401,983,309.52 and 159,137,515.20

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Solution

The fourth proportional to 291,287,959.32, 401,983,309.52 and 159,137,515.20 is: 219,613,008.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,287,959.32 : 401,983,309.52 = 159,137,515.20 : x
  2. Step 2: Convert to fraction form
    291,287,959.32/401,983,309.52 = 159,137,515.20/x
  3. Step 3: Cross multiply
    291,287,959.32x = 401,983,309.52 × 159,137,515.20
  4. Step 4: Simplify right side
    291,287,959.32x = 63,970,625,028,885,296
  5. Step 5: Solve for x
    x = 63,970,625,028,885,296/291,287,959.32
  6. Step 6: Final answer
    x = 219,613,008.30

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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.