Home / 257,625.24-355,543.47-142,915.20

Finding the Fourth Proportional to 257,625.24, 355,543.47 and 142,915.20

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Solution

The fourth proportional to 257,625.24, 355,543.47 and 142,915.20 is: 197,234.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,625.24 : 355,543.47 = 142,915.20 : x
  2. Step 2: Convert to fraction form
    257,625.24/355,543.47 = 142,915.20/x
  3. Step 3: Cross multiply
    257,625.24x = 355,543.47 × 142,915.20
  4. Step 4: Simplify right side
    257,625.24x = 50,812,566,123.74
  5. Step 5: Solve for x
    x = 50,812,566,123.74/257,625.24
  6. Step 6: Final answer
    x = 197,234.43

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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.