Home / 210,221.20-315,268.08-77,112.28

Finding the Fourth Proportional to 210,221.20, 315,268.08 and 77,112.28

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Solution

The fourth proportional to 210,221.20, 315,268.08 and 77,112.28 is: 115,645.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,221.20 : 315,268.08 = 77,112.28 : x
  2. Step 2: Convert to fraction form
    210,221.20/315,268.08 = 77,112.28/x
  3. Step 3: Cross multiply
    210,221.20x = 315,268.08 × 77,112.28
  4. Step 4: Simplify right side
    210,221.20x = 24,311,040,460.02
  5. Step 5: Solve for x
    x = 24,311,040,460.02/210,221.20
  6. Step 6: Final answer
    x = 115,645.05

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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.