Home / 210,729.10-315,316.05-192,066.70

Finding the Fourth Proportional to 210,729.10, 315,316.05 and 192,066.70

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Solution

The fourth proportional to 210,729.10, 315,316.05 and 192,066.70 is: 287,391.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,729.10 : 315,316.05 = 192,066.70 : x
  2. Step 2: Convert to fraction form
    210,729.10/315,316.05 = 192,066.70/x
  3. Step 3: Cross multiply
    210,729.10x = 315,316.05 × 192,066.70
  4. Step 4: Simplify right side
    210,729.10x = 60,561,713,180.54
  5. Step 5: Solve for x
    x = 60,561,713,180.54/210,729.10
  6. Step 6: Final answer
    x = 287,391.32

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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.