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Finding the Fourth Proportional to 418,484.48, 627,726.88 and 169,341.44

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Solution

The fourth proportional to 418,484.48, 627,726.88 and 169,341.44 is: 254,012.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,484.48 : 627,726.88 = 169,341.44 : x
  2. Step 2: Convert to fraction form
    418,484.48/627,726.88 = 169,341.44/x
  3. Step 3: Cross multiply
    418,484.48x = 627,726.88 × 169,341.44
  4. Step 4: Simplify right side
    418,484.48x = 106,300,173,785.91
  5. Step 5: Solve for x
    x = 106,300,173,785.91/418,484.48
  6. Step 6: Final answer
    x = 254,012.22

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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.