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Finding the Fourth Proportional to 388,121.92, 535,854.35 and 265,819.41

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Solution

The fourth proportional to 388,121.92, 535,854.35 and 265,819.41 is: 366,999.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,121.92 : 535,854.35 = 265,819.41 : x
  2. Step 2: Convert to fraction form
    388,121.92/535,854.35 = 265,819.41/x
  3. Step 3: Cross multiply
    388,121.92x = 535,854.35 × 265,819.41
  4. Step 4: Simplify right side
    388,121.92x = 142,440,487,827.48
  5. Step 5: Solve for x
    x = 142,440,487,827.48/388,121.92
  6. Step 6: Final answer
    x = 366,999.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.