Home / 257,345.64-355,151.12-142,621.88

Finding the Fourth Proportional to 257,345.64, 355,151.12 and 142,621.88

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Solution

The fourth proportional to 257,345.64, 355,151.12 and 142,621.88 is: 196,826.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,345.64 : 355,151.12 = 142,621.88 : x
  2. Step 2: Convert to fraction form
    257,345.64/355,151.12 = 142,621.88/x
  3. Step 3: Cross multiply
    257,345.64x = 355,151.12 × 142,621.88
  4. Step 4: Simplify right side
    257,345.64x = 50,652,317,929.64
  5. Step 5: Solve for x
    x = 50,652,317,929.64/257,345.64
  6. Step 6: Final answer
    x = 196,826.02

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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.