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Finding the Fourth Proportional to 342,006.55, 479,990.15 and 342,006.55

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Solution

The fourth proportional to 342,006.55, 479,990.15 and 342,006.55 is: 479,990.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,006.55 : 479,990.15 = 342,006.55 : x
  2. Step 2: Convert to fraction form
    342,006.55/479,990.15 = 342,006.55/x
  3. Step 3: Cross multiply
    342,006.55x = 479,990.15 × 342,006.55
  4. Step 4: Simplify right side
    342,006.55x = 164,159,775,235.48
  5. Step 5: Solve for x
    x = 164,159,775,235.48/342,006.55
  6. Step 6: Final answer
    x = 479,990.15

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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.