Home / 257,509.22-355,356.57-142,787.30

Finding the Fourth Proportional to 257,509.22, 355,356.57 and 142,787.30

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Solution

The fourth proportional to 257,509.22, 355,356.57 and 142,787.30 is: 197,043.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,509.22 : 355,356.57 = 142,787.30 : x
  2. Step 2: Convert to fraction form
    257,509.22/355,356.57 = 142,787.30/x
  3. Step 3: Cross multiply
    257,509.22x = 355,356.57 × 142,787.30
  4. Step 4: Simplify right side
    257,509.22x = 50,740,405,167.56
  5. Step 5: Solve for x
    x = 50,740,405,167.56/257,509.22
  6. Step 6: Final answer
    x = 197,043.06

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1.5x scale

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.