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Finding the Fourth Proportional to 342,003.80, 479,986.30 and 342,003.80

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Solution

The fourth proportional to 342,003.80, 479,986.30 and 342,003.80 is: 479,986.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,003.80 : 479,986.30 = 342,003.80 : x
  2. Step 2: Convert to fraction form
    342,003.80/479,986.30 = 342,003.80/x
  3. Step 3: Cross multiply
    342,003.80x = 479,986.30 × 342,003.80
  4. Step 4: Simplify right side
    342,003.80x = 164,157,138,547.94
  5. Step 5: Solve for x
    x = 164,157,138,547.94/342,003.80
  6. Step 6: Final answer
    x = 479,986.30

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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.