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Finding the Fourth Proportional to 215,812.16, 323,714.40 and 82,656.32

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Solution

The fourth proportional to 215,812.16, 323,714.40 and 82,656.32 is: 123,983.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,812.16 : 323,714.40 = 82,656.32 : x
  2. Step 2: Convert to fraction form
    215,812.16/323,714.40 = 82,656.32/x
  3. Step 3: Cross multiply
    215,812.16x = 323,714.40 × 82,656.32
  4. Step 4: Simplify right side
    215,812.16x = 26,757,041,035.01
  5. Step 5: Solve for x
    x = 26,757,041,035.01/215,812.16
  6. Step 6: Final answer
    x = 123,983.01

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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.