Home / 291,287,943.20-401,983,287.37-159,137,499.08

Finding the Fourth Proportional to 291,287,943.20, 401,983,287.37 and 159,137,499.08

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Solution

The fourth proportional to 291,287,943.20, 401,983,287.37 and 159,137,499.08 is: 219,612,986.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,287,943.20 : 401,983,287.37 = 159,137,499.08 : x
  2. Step 2: Convert to fraction form
    291,287,943.20/401,983,287.37 = 159,137,499.08/x
  3. Step 3: Cross multiply
    291,287,943.20x = 401,983,287.37 × 159,137,499.08
  4. Step 4: Simplify right side
    291,287,943.20x = 63,970,615,024,625,872
  5. Step 5: Solve for x
    x = 63,970,615,024,625,872/291,287,943.20
  6. Step 6: Final answer
    x = 219,612,986.11

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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.