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Finding the Fourth Proportional to 257,737.12, 355,660.14 and 143,008.49

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Solution

The fourth proportional to 257,737.12, 355,660.14 and 143,008.49 is: 197,342.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,737.12 : 355,660.14 = 143,008.49 : x
  2. Step 2: Convert to fraction form
    257,737.12/355,660.14 = 143,008.49/x
  3. Step 3: Cross multiply
    257,737.12x = 355,660.14 × 143,008.49
  4. Step 4: Simplify right side
    257,737.12x = 50,862,419,927.46
  5. Step 5: Solve for x
    x = 50,862,419,927.46/257,737.12
  6. Step 6: Final answer
    x = 197,342.24

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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.