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Finding the Fourth Proportional to 373,560, 515,512.80 and 239,424

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Solution

The fourth proportional to 373,560, 515,512.80 and 239,424 is: 330,405.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,560 : 515,512.80 = 239,424 : x
  2. Step 2: Convert to fraction form
    373,560/515,512.80 = 239,424/x
  3. Step 3: Cross multiply
    373,560x = 515,512.80 × 239,424
  4. Step 4: Simplify right side
    373,560x = 123,426,136,627.20
  5. Step 5: Solve for x
    x = 123,426,136,627.20/373,560
  6. Step 6: Final answer
    x = 330,405.12

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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.