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Finding the Fourth Proportional to 381,722.48, 527,272.80 and 290,524.40

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Solution

The fourth proportional to 381,722.48, 527,272.80 and 290,524.40 is: 401,301.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,722.48 : 527,272.80 = 290,524.40 : x
  2. Step 2: Convert to fraction form
    381,722.48/527,272.80 = 290,524.40/x
  3. Step 3: Cross multiply
    381,722.48x = 527,272.80 × 290,524.40
  4. Step 4: Simplify right side
    381,722.48x = 153,185,613,856.32
  5. Step 5: Solve for x
    x = 153,185,613,856.32/381,722.48
  6. Step 6: Final answer
    x = 401,301.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.