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Finding the Fourth Proportional to 215,548.70, 323,323.05 and 165,724.70

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Solution

The fourth proportional to 215,548.70, 323,323.05 and 165,724.70 is: 248,587.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,548.70 : 323,323.05 = 165,724.70 : x
  2. Step 2: Convert to fraction form
    215,548.70/323,323.05 = 165,724.70/x
  3. Step 3: Cross multiply
    215,548.70x = 323,323.05 × 165,724.70
  4. Step 4: Simplify right side
    215,548.70x = 53,582,615,464.34
  5. Step 5: Solve for x
    x = 53,582,615,464.34/215,548.70
  6. Step 6: Final answer
    x = 248,587.05

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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.