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Finding the Fourth Proportional to 342,215.80, 513,906.90 and 243,071.80

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Solution

The fourth proportional to 342,215.80, 513,906.90 and 243,071.80 is: 365,021.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,215.80 : 513,906.90 = 243,071.80 : x
  2. Step 2: Convert to fraction form
    342,215.80/513,906.90 = 243,071.80/x
  3. Step 3: Cross multiply
    342,215.80x = 513,906.90 × 243,071.80
  4. Step 4: Simplify right side
    342,215.80x = 124,916,275,215.42
  5. Step 5: Solve for x
    x = 124,916,275,215.42/342,215.80
  6. Step 6: Final answer
    x = 365,021.94

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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.