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Finding the Fourth Proportional to 518,226.26, 777,443.88 and 218,707.16

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Solution

The fourth proportional to 518,226.26, 777,443.88 and 218,707.16 is: 328,104.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,226.26 : 777,443.88 = 218,707.16 : x
  2. Step 2: Convert to fraction form
    518,226.26/777,443.88 = 218,707.16/x
  3. Step 3: Cross multiply
    518,226.26x = 777,443.88 × 218,707.16
  4. Step 4: Simplify right side
    518,226.26x = 170,032,543,054.18
  5. Step 5: Solve for x
    x = 170,032,543,054.18/518,226.26
  6. Step 6: Final answer
    x = 328,104.84

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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.