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Finding the Fourth Proportional to 342,224.73, 512,975.11 and 128,900.34

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Solution

The fourth proportional to 342,224.73, 512,975.11 and 128,900.34 is: 193,214.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,224.73 : 512,975.11 = 128,900.34 : x
  2. Step 2: Convert to fraction form
    342,224.73/512,975.11 = 128,900.34/x
  3. Step 3: Cross multiply
    342,224.73x = 512,975.11 × 128,900.34
  4. Step 4: Simplify right side
    342,224.73x = 66,122,667,541.51
  5. Step 5: Solve for x
    x = 66,122,667,541.51/342,224.73
  6. Step 6: Final answer
    x = 193,214.17

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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.