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Finding the Fourth Proportional to 576,210.81, 864,251.49 and 220,975.59

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Solution

The fourth proportional to 576,210.81, 864,251.49 and 220,975.59 is: 331,438.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,210.81 : 864,251.49 = 220,975.59 : x
  2. Step 2: Convert to fraction form
    576,210.81/864,251.49 = 220,975.59/x
  3. Step 3: Cross multiply
    576,210.81x = 864,251.49 × 220,975.59
  4. Step 4: Simplify right side
    576,210.81x = 190,978,482,911.13
  5. Step 5: Solve for x
    x = 190,978,482,911.13/576,210.81
  6. Step 6: Final answer
    x = 331,438.56

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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.