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Finding the Fourth Proportional to 342,262.89, 512,343.37 and 215,308.71

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Solution

The fourth proportional to 342,262.89, 512,343.37 and 215,308.71 is: 322,301.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,262.89 : 512,343.37 = 215,308.71 : x
  2. Step 2: Convert to fraction form
    342,262.89/512,343.37 = 215,308.71/x
  3. Step 3: Cross multiply
    342,262.89x = 512,343.37 × 215,308.71
  4. Step 4: Simplify right side
    342,262.89x = 110,311,989,700.46
  5. Step 5: Solve for x
    x = 110,311,989,700.46/342,262.89
  6. Step 6: Final answer
    x = 322,301.93

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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.