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Finding the Fourth Proportional to 438,647, 658,033.33 and 135,066.90

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Solution

The fourth proportional to 438,647, 658,033.33 and 135,066.90 is: 202,619.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,647 : 658,033.33 = 135,066.90 : x
  2. Step 2: Convert to fraction form
    438,647/658,033.33 = 135,066.90/x
  3. Step 3: Cross multiply
    438,647x = 658,033.33 × 135,066.90
  4. Step 4: Simplify right side
    438,647x = 88,878,521,979.78
  5. Step 5: Solve for x
    x = 88,878,521,979.78/438,647
  6. Step 6: Final answer
    x = 202,619.70

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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.