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Finding the Fourth Proportional to 418,168.51, 627,291.65 and 118,656.43

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Solution

The fourth proportional to 418,168.51, 627,291.65 and 118,656.43 is: 177,995.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,168.51 : 627,291.65 = 118,656.43 : x
  2. Step 2: Convert to fraction form
    418,168.51/627,291.65 = 118,656.43/x
  3. Step 3: Cross multiply
    418,168.51x = 627,291.65 × 118,656.43
  4. Step 4: Simplify right side
    418,168.51x = 74,432,187,757.81
  5. Step 5: Solve for x
    x = 74,432,187,757.81/418,168.51
  6. Step 6: Final answer
    x = 177,995.68

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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.