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Finding the Fourth Proportional to 215,084.16, 322,410.24 and 81,930.24

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Solution

The fourth proportional to 215,084.16, 322,410.24 and 81,930.24 is: 122,813.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,084.16 : 322,410.24 = 81,930.24 : x
  2. Step 2: Convert to fraction form
    215,084.16/322,410.24 = 81,930.24/x
  3. Step 3: Cross multiply
    215,084.16x = 322,410.24 × 81,930.24
  4. Step 4: Simplify right side
    215,084.16x = 26,415,148,341.66
  5. Step 5: Solve for x
    x = 26,415,148,341.66/215,084.16
  6. Step 6: Final answer
    x = 122,813.08

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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.