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Finding the Fourth Proportional to 170,859.80, 256,548.90 and 131,461.40

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Solution

The fourth proportional to 170,859.80, 256,548.90 and 131,461.40 is: 197,391.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,859.80 : 256,548.90 = 131,461.40 : x
  2. Step 2: Convert to fraction form
    170,859.80/256,548.90 = 131,461.40/x
  3. Step 3: Cross multiply
    170,859.80x = 256,548.90 × 131,461.40
  4. Step 4: Simplify right side
    170,859.80x = 33,726,277,562.46
  5. Step 5: Solve for x
    x = 33,726,277,562.46/170,859.80
  6. Step 6: Final answer
    x = 197,391.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.