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Finding the Fourth Proportional to 388,432.07, 535,607.83 and 265,944.61

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Solution

The fourth proportional to 388,432.07, 535,607.83 and 265,944.61 is: 366,710.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,432.07 : 535,607.83 = 265,944.61 : x
  2. Step 2: Convert to fraction form
    388,432.07/535,607.83 = 265,944.61/x
  3. Step 3: Cross multiply
    388,432.07x = 535,607.83 × 265,944.61
  4. Step 4: Simplify right side
    388,432.07x = 142,442,016,555.11
  5. Step 5: Solve for x
    x = 142,442,016,555.11/388,432.07
  6. Step 6: Final answer
    x = 366,710.23

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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.