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Finding the Fourth Proportional to 145,309.68, 217,958.49 and 50,561.55

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Solution

The fourth proportional to 145,309.68, 217,958.49 and 50,561.55 is: 75,840.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,309.68 : 217,958.49 = 50,561.55 : x
  2. Step 2: Convert to fraction form
    145,309.68/217,958.49 = 50,561.55/x
  3. Step 3: Cross multiply
    145,309.68x = 217,958.49 × 50,561.55
  4. Step 4: Simplify right side
    145,309.68x = 11,020,319,090.06
  5. Step 5: Solve for x
    x = 11,020,319,090.06/145,309.68
  6. Step 6: Final answer
    x = 75,840.23

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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.