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Finding the Fourth Proportional to 170,838.30, 256,257.45 and 168,213.90

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Solution

The fourth proportional to 170,838.30, 256,257.45 and 168,213.90 is: 252,320.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,838.30 : 256,257.45 = 168,213.90 : x
  2. Step 2: Convert to fraction form
    170,838.30/256,257.45 = 168,213.90/x
  3. Step 3: Cross multiply
    170,838.30x = 256,257.45 × 168,213.90
  4. Step 4: Simplify right side
    170,838.30x = 43,106,065,068.56
  5. Step 5: Solve for x
    x = 43,106,065,068.56/170,838.30
  6. Step 6: Final answer
    x = 252,320.85

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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.