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Finding the Fourth Proportional to 576,139.80, 863,721.71 and 238,970.01

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Solution

The fourth proportional to 576,139.80, 863,721.71 and 238,970.01 is: 358,252.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,139.80 : 863,721.71 = 238,970.01 : x
  2. Step 2: Convert to fraction form
    576,139.80/863,721.71 = 238,970.01/x
  3. Step 3: Cross multiply
    576,139.80x = 863,721.71 × 238,970.01
  4. Step 4: Simplify right side
    576,139.80x = 206,403,584,481.07
  5. Step 5: Solve for x
    x = 206,403,584,481.07/576,139.80
  6. Step 6: Final answer
    x = 358,252.61

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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.