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Finding the Fourth Proportional to 576,727.90, 864,832.65 and 221,623.90

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Solution

The fourth proportional to 576,727.90, 864,832.65 and 221,623.90 is: 332,336.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,727.90 : 864,832.65 = 221,623.90 : x
  2. Step 2: Convert to fraction form
    576,727.90/864,832.65 = 221,623.90/x
  3. Step 3: Cross multiply
    576,727.90x = 864,832.65 × 221,623.90
  4. Step 4: Simplify right side
    576,727.90x = 191,667,584,740.34
  5. Step 5: Solve for x
    x = 191,667,584,740.34/576,727.90
  6. Step 6: Final answer
    x = 332,336.25

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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.