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Finding the Fourth Proportional to 170,831.61, 256,271.91 and 52,512.88

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Solution

The fourth proportional to 170,831.61, 256,271.91 and 52,512.88 is: 78,776.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,831.61 : 256,271.91 = 52,512.88 : x
  2. Step 2: Convert to fraction form
    170,831.61/256,271.91 = 52,512.88/x
  3. Step 3: Cross multiply
    170,831.61x = 256,271.91 × 52,512.88
  4. Step 4: Simplify right side
    170,831.61x = 13,457,576,057.20
  5. Step 5: Solve for x
    x = 13,457,576,057.20/170,831.61
  6. Step 6: Final answer
    x = 78,776.85

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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.