Home / 291,439.28-437,159.73-81,077.42

Finding the Fourth Proportional to 291,439.28, 437,159.73 and 81,077.42

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Solution

The fourth proportional to 291,439.28, 437,159.73 and 81,077.42 is: 121,616.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,439.28 : 437,159.73 = 81,077.42 : x
  2. Step 2: Convert to fraction form
    291,439.28/437,159.73 = 81,077.42/x
  3. Step 3: Cross multiply
    291,439.28x = 437,159.73 × 81,077.42
  4. Step 4: Simplify right side
    291,439.28x = 35,443,783,036.30
  5. Step 5: Solve for x
    x = 35,443,783,036.30/291,439.28
  6. Step 6: Final answer
    x = 121,616.36

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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.