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Finding the Fourth Proportional to 170,728.10, 256,015.35 and 65,512.10

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Solution

The fourth proportional to 170,728.10, 256,015.35 and 65,512.10 is: 98,238.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,728.10 : 256,015.35 = 65,512.10 : x
  2. Step 2: Convert to fraction form
    170,728.10/256,015.35 = 65,512.10/x
  3. Step 3: Cross multiply
    170,728.10x = 256,015.35 × 65,512.10
  4. Step 4: Simplify right side
    170,728.10x = 16,772,103,210.74
  5. Step 5: Solve for x
    x = 16,772,103,210.74/170,728.10
  6. Step 6: Final answer
    x = 98,238.68

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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.