Home / 210,216.20-315,227.10-91,826.60

Finding the Fourth Proportional to 210,216.20, 315,227.10 and 91,826.60

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Solution

The fourth proportional to 210,216.20, 315,227.10 and 91,826.60 is: 137,697.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,216.20 : 315,227.10 = 91,826.60 : x
  2. Step 2: Convert to fraction form
    210,216.20/315,227.10 = 91,826.60/x
  3. Step 3: Cross multiply
    210,216.20x = 315,227.10 × 91,826.60
  4. Step 4: Simplify right side
    210,216.20x = 28,946,232,820.86
  5. Step 5: Solve for x
    x = 28,946,232,820.86/210,216.20
  6. Step 6: Final answer
    x = 137,697.44

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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.