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Finding the Fourth Proportional to 256,940.02, 385,420.56 and 69,951.52

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Solution

The fourth proportional to 256,940.02, 385,420.56 and 69,951.52 is: 104,930.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,940.02 : 385,420.56 = 69,951.52 : x
  2. Step 2: Convert to fraction form
    256,940.02/385,420.56 = 69,951.52/x
  3. Step 3: Cross multiply
    256,940.02x = 385,420.56 × 69,951.52
  4. Step 4: Simplify right side
    256,940.02x = 26,960,754,011.25
  5. Step 5: Solve for x
    x = 26,960,754,011.25/256,940.02
  6. Step 6: Final answer
    x = 104,930.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.