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Finding the Fourth Proportional to 576,071.87, 864,107.89 and 155,347.79

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Solution

The fourth proportional to 576,071.87, 864,107.89 and 155,347.79 is: 233,021.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,071.87 : 864,107.89 = 155,347.79 : x
  2. Step 2: Convert to fraction form
    576,071.87/864,107.89 = 155,347.79/x
  3. Step 3: Cross multiply
    576,071.87x = 864,107.89 × 155,347.79
  4. Step 4: Simplify right side
    576,071.87x = 134,237,246,324.15
  5. Step 5: Solve for x
    x = 134,237,246,324.15/576,071.87
  6. Step 6: Final answer
    x = 233,021.70

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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.