Home / 215,741.20-323,688.60-208,061.20

Finding the Fourth Proportional to 215,741.20, 323,688.60 and 208,061.20

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Solution

The fourth proportional to 215,741.20, 323,688.60 and 208,061.20 is: 312,165.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,741.20 : 323,688.60 = 208,061.20 : x
  2. Step 2: Convert to fraction form
    215,741.20/323,688.60 = 208,061.20/x
  3. Step 3: Cross multiply
    215,741.20x = 323,688.60 × 208,061.20
  4. Step 4: Simplify right side
    215,741.20x = 67,347,038,542.32
  5. Step 5: Solve for x
    x = 67,347,038,542.32/215,741.20
  6. Step 6: Final answer
    x = 312,165.87

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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.