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Finding the Fourth Proportional to 427,336.56, 640,552.86 and 160,981.92

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Solution

The fourth proportional to 427,336.56, 640,552.86 and 160,981.92 is: 241,302.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,336.56 : 640,552.86 = 160,981.92 : x
  2. Step 2: Convert to fraction form
    427,336.56/640,552.86 = 160,981.92/x
  3. Step 3: Cross multiply
    427,336.56x = 640,552.86 × 160,981.92
  4. Step 4: Simplify right side
    427,336.56x = 103,117,429,264.29
  5. Step 5: Solve for x
    x = 103,117,429,264.29/427,336.56
  6. Step 6: Final answer
    x = 241,302.61

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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.