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Finding the Fourth Proportional to 171,039.70, 256,559.55 and 147,711.70

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Solution

The fourth proportional to 171,039.70, 256,559.55 and 147,711.70 is: 221,567.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,039.70 : 256,559.55 = 147,711.70 : x
  2. Step 2: Convert to fraction form
    171,039.70/256,559.55 = 147,711.70/x
  3. Step 3: Cross multiply
    171,039.70x = 256,559.55 × 147,711.70
  4. Step 4: Simplify right side
    171,039.70x = 37,896,847,281.74
  5. Step 5: Solve for x
    x = 37,896,847,281.74/171,039.70
  6. Step 6: Final answer
    x = 221,567.55

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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.