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Finding the Fourth Proportional to 373,590, 515,554.20 and 239,454

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Solution

The fourth proportional to 373,590, 515,554.20 and 239,454 is: 330,446.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,590 : 515,554.20 = 239,454 : x
  2. Step 2: Convert to fraction form
    373,590/515,554.20 = 239,454/x
  3. Step 3: Cross multiply
    373,590x = 515,554.20 × 239,454
  4. Step 4: Simplify right side
    373,590x = 123,451,515,406.80
  5. Step 5: Solve for x
    x = 123,451,515,406.80/373,590
  6. Step 6: Final answer
    x = 330,446.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.