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Finding the Fourth Proportional to 418,551.26, 627,826.91 and 103,008.17

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Solution

The fourth proportional to 418,551.26, 627,826.91 and 103,008.17 is: 154,512.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,551.26 : 627,826.91 = 103,008.17 : x
  2. Step 2: Convert to fraction form
    418,551.26/627,826.91 = 103,008.17/x
  3. Step 3: Cross multiply
    418,551.26x = 627,826.91 × 103,008.17
  4. Step 4: Simplify right side
    418,551.26x = 64,671,302,130.38
  5. Step 5: Solve for x
    x = 64,671,302,130.38/418,551.26
  6. Step 6: Final answer
    x = 154,512.26

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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.