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Finding the Fourth Proportional to 518,159.50, 776,905.26 and 218,559.94

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Solution

The fourth proportional to 518,159.50, 776,905.26 and 218,559.94 is: 327,699.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,159.50 : 776,905.26 = 218,559.94 : x
  2. Step 2: Convert to fraction form
    518,159.50/776,905.26 = 218,559.94/x
  3. Step 3: Cross multiply
    518,159.50x = 776,905.26 × 218,559.94
  4. Step 4: Simplify right side
    518,159.50x = 169,800,367,011.28
  5. Step 5: Solve for x
    x = 169,800,367,011.28/518,159.50
  6. Step 6: Final answer
    x = 327,699.03

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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.