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Finding the Fourth Proportional to 250,711.93, 345,980.43 and 135,990.29

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Solution

The fourth proportional to 250,711.93, 345,980.43 and 135,990.29 is: 187,665.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,711.93 : 345,980.43 = 135,990.29 : x
  2. Step 2: Convert to fraction form
    250,711.93/345,980.43 = 135,990.29/x
  3. Step 3: Cross multiply
    250,711.93x = 345,980.43 × 135,990.29
  4. Step 4: Simplify right side
    250,711.93x = 47,049,977,280.12
  5. Step 5: Solve for x
    x = 47,049,977,280.12/250,711.93
  6. Step 6: Final answer
    x = 187,665.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.