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Finding the Fourth Proportional to 518,146.92, 776,903.78 and 248,357.61

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Solution

The fourth proportional to 518,146.92, 776,903.78 and 248,357.61 is: 372,384.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,146.92 : 776,903.78 = 248,357.61 : x
  2. Step 2: Convert to fraction form
    518,146.92/776,903.78 = 248,357.61/x
  3. Step 3: Cross multiply
    518,146.92x = 776,903.78 × 248,357.61
  4. Step 4: Simplify right side
    518,146.92x = 192,949,964,758.98
  5. Step 5: Solve for x
    x = 192,949,964,758.98/518,146.92
  6. Step 6: Final answer
    x = 372,384.66

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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.