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Finding the Fourth Proportional to 345,935.80, 518,903.70 and 341,270.20

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Solution

The fourth proportional to 345,935.80, 518,903.70 and 341,270.20 is: 511,905.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,935.80 : 518,903.70 = 341,270.20 : x
  2. Step 2: Convert to fraction form
    345,935.80/518,903.70 = 341,270.20/x
  3. Step 3: Cross multiply
    345,935.80x = 518,903.70 × 341,270.20
  4. Step 4: Simplify right side
    345,935.80x = 177,086,369,479.74
  5. Step 5: Solve for x
    x = 177,086,369,479.74/345,935.80
  6. Step 6: Final answer
    x = 511,905.30

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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.