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Finding the Fourth Proportional to 481,358.40, 721,838.88 and 181,788

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Solution

The fourth proportional to 481,358.40, 721,838.88 and 181,788 is: 272,606.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,358.40 : 721,838.88 = 181,788 : x
  2. Step 2: Convert to fraction form
    481,358.40/721,838.88 = 181,788/x
  3. Step 3: Cross multiply
    481,358.40x = 721,838.88 × 181,788
  4. Step 4: Simplify right side
    481,358.40x = 131,221,646,317.44
  5. Step 5: Solve for x
    x = 131,221,646,317.44/481,358.40
  6. Step 6: Final answer
    x = 272,606.95

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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.