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Finding the Fourth Proportional to 342,007.30, 479,991.20 and 342,007.30

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Solution

The fourth proportional to 342,007.30, 479,991.20 and 342,007.30 is: 479,991.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,007.30 : 479,991.20 = 342,007.30 : x
  2. Step 2: Convert to fraction form
    342,007.30/479,991.20 = 342,007.30/x
  3. Step 3: Cross multiply
    342,007.30x = 479,991.20 × 342,007.30
  4. Step 4: Simplify right side
    342,007.30x = 164,160,494,335.76
  5. Step 5: Solve for x
    x = 164,160,494,335.76/342,007.30
  6. Step 6: Final answer
    x = 479,991.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.