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Finding the Fourth Proportional to 518,159.25, 776,904.89 and 218,559.69

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Solution

The fourth proportional to 518,159.25, 776,904.89 and 218,559.69 is: 327,698.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,159.25 : 776,904.89 = 218,559.69 : x
  2. Step 2: Convert to fraction form
    518,159.25/776,904.89 = 218,559.69/x
  3. Step 3: Cross multiply
    518,159.25x = 776,904.89 × 218,559.69
  4. Step 4: Simplify right side
    518,159.25x = 169,800,090,825.09
  5. Step 5: Solve for x
    x = 169,800,090,825.09/518,159.25
  6. Step 6: Final answer
    x = 327,698.66

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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.