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Finding the Fourth Proportional to 418,707.69, 627,967.19 and 119,181.63

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Solution

The fourth proportional to 418,707.69, 627,967.19 and 119,181.63 is: 178,745.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,707.69 : 627,967.19 = 119,181.63 : x
  2. Step 2: Convert to fraction form
    418,707.69/627,967.19 = 119,181.63/x
  3. Step 3: Cross multiply
    418,707.69x = 627,967.19 × 119,181.63
  4. Step 4: Simplify right side
    418,707.69x = 74,842,153,290.72
  5. Step 5: Solve for x
    x = 74,842,153,290.72/418,707.69
  6. Step 6: Final answer
    x = 178,745.59

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1.5x scale

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.