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Finding the Fourth Proportional to 518,729.49, 777,907.08 and 219,233.25

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Solution

The fourth proportional to 518,729.49, 777,907.08 and 219,233.25 is: 328,770.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,729.49 : 777,907.08 = 219,233.25 : x
  2. Step 2: Convert to fraction form
    518,729.49/777,907.08 = 219,233.25/x
  3. Step 3: Cross multiply
    518,729.49x = 777,907.08 × 219,233.25
  4. Step 4: Simplify right side
    518,729.49x = 170,543,097,346.41
  5. Step 5: Solve for x
    x = 170,543,097,346.41/518,729.49
  6. Step 6: Final answer
    x = 328,770.78

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1.5x scale

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.