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Finding the Fourth Proportional to 346,727.80, 518,939.70 and 251,687.80

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Solution

The fourth proportional to 346,727.80, 518,939.70 and 251,687.80 is: 376,695.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,727.80 : 518,939.70 = 251,687.80 : x
  2. Step 2: Convert to fraction form
    346,727.80/518,939.70 = 251,687.80/x
  3. Step 3: Cross multiply
    346,727.80x = 518,939.70 × 251,687.80
  4. Step 4: Simplify right side
    346,727.80x = 130,610,791,425.66
  5. Step 5: Solve for x
    x = 130,610,791,425.66/346,727.80
  6. Step 6: Final answer
    x = 376,695.47

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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.