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Finding the Fourth Proportional to 576,338.72, 864,549.59 and 221,352.75

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Solution

The fourth proportional to 576,338.72, 864,549.59 and 221,352.75 is: 332,045.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,338.72 : 864,549.59 = 221,352.75 : x
  2. Step 2: Convert to fraction form
    576,338.72/864,549.59 = 221,352.75/x
  3. Step 3: Cross multiply
    576,338.72x = 864,549.59 × 221,352.75
  4. Step 4: Simplify right side
    576,338.72x = 191,370,428,151.11
  5. Step 5: Solve for x
    x = 191,370,428,151.11/576,338.72
  6. Step 6: Final answer
    x = 332,045.07

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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.