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Finding the Fourth Proportional to 342,263.51, 512,344.31 and 215,309.33

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Solution

The fourth proportional to 342,263.51, 512,344.31 and 215,309.33 is: 322,302.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,263.51 : 512,344.31 = 215,309.33 : x
  2. Step 2: Convert to fraction form
    342,263.51/512,344.31 = 215,309.33/x
  3. Step 3: Cross multiply
    342,263.51x = 512,344.31 × 215,309.33
  4. Step 4: Simplify right side
    342,263.51x = 110,312,510,115.41
  5. Step 5: Solve for x
    x = 110,312,510,115.41/342,263.51
  6. Step 6: Final answer
    x = 322,302.87

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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.