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Finding the Fourth Proportional to 418,578.18, 627,853.23 and 181,920.84

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Solution

The fourth proportional to 418,578.18, 627,853.23 and 181,920.84 is: 272,875.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,578.18 : 627,853.23 = 181,920.84 : x
  2. Step 2: Convert to fraction form
    418,578.18/627,853.23 = 181,920.84/x
  3. Step 3: Cross multiply
    418,578.18x = 627,853.23 × 181,920.84
  4. Step 4: Simplify right side
    418,578.18x = 114,219,586,998.31
  5. Step 5: Solve for x
    x = 114,219,586,998.31/418,578.18
  6. Step 6: Final answer
    x = 272,875.16

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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.