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Finding the Fourth Proportional to 325,711.69, 488,510.07 and 125,867.78

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Solution

The fourth proportional to 325,711.69, 488,510.07 and 125,867.78 is: 188,779.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,711.69 : 488,510.07 = 125,867.78 : x
  2. Step 2: Convert to fraction form
    325,711.69/488,510.07 = 125,867.78/x
  3. Step 3: Cross multiply
    325,711.69x = 488,510.07 × 125,867.78
  4. Step 4: Simplify right side
    325,711.69x = 61,487,678,018.54
  5. Step 5: Solve for x
    x = 61,487,678,018.54/325,711.69
  6. Step 6: Final answer
    x = 188,779.47

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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.