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Finding the Fourth Proportional to 215,203.84, 322,398.72 and 121,776.64

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Solution

The fourth proportional to 215,203.84, 322,398.72 and 121,776.64 is: 182,434.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,203.84 : 322,398.72 = 121,776.64 : x
  2. Step 2: Convert to fraction form
    215,203.84/322,398.72 = 121,776.64/x
  3. Step 3: Cross multiply
    215,203.84x = 322,398.72 × 121,776.64
  4. Step 4: Simplify right side
    215,203.84x = 39,260,632,861.90
  5. Step 5: Solve for x
    x = 39,260,632,861.90/215,203.84
  6. Step 6: Final answer
    x = 182,434.63

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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.