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Finding the Fourth Proportional to 487,863, 673,154.28 and 272,961.36

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Solution

The fourth proportional to 487,863, 673,154.28 and 272,961.36 is: 376,632.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,863 : 673,154.28 = 272,961.36 : x
  2. Step 2: Convert to fraction form
    487,863/673,154.28 = 272,961.36/x
  3. Step 3: Cross multiply
    487,863x = 673,154.28 × 272,961.36
  4. Step 4: Simplify right side
    487,863x = 183,745,107,758.62
  5. Step 5: Solve for x
    x = 183,745,107,758.62/487,863
  6. Step 6: Final answer
    x = 376,632.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.