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Finding the Fourth Proportional to 170,987.40, 256,456.80 and 58,672.80

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Solution

The fourth proportional to 170,987.40, 256,456.80 and 58,672.80 is: 88,000.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,987.40 : 256,456.80 = 58,672.80 : x
  2. Step 2: Convert to fraction form
    170,987.40/256,456.80 = 58,672.80/x
  3. Step 3: Cross multiply
    170,987.40x = 256,456.80 × 58,672.80
  4. Step 4: Simplify right side
    170,987.40x = 15,047,038,535.04
  5. Step 5: Solve for x
    x = 15,047,038,535.04/170,987.40
  6. Step 6: Final answer
    x = 88,000.86

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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.