Home / 291,320.28-402,022.64-162,257.72

Finding the Fourth Proportional to 291,320.28, 402,022.64 and 162,257.72

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Solution

The fourth proportional to 291,320.28, 402,022.64 and 162,257.72 is: 223,916.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,320.28 : 402,022.64 = 162,257.72 : x
  2. Step 2: Convert to fraction form
    291,320.28/402,022.64 = 162,257.72/x
  3. Step 3: Cross multiply
    291,320.28x = 402,022.64 × 162,257.72
  4. Step 4: Simplify right side
    291,320.28x = 65,231,275,350.31
  5. Step 5: Solve for x
    x = 65,231,275,350.31/291,320.28
  6. Step 6: Final answer
    x = 223,916.01

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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.