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Finding the Fourth Proportional to 398,519.51, 597,787.47 and 161,700.21

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Solution

The fourth proportional to 398,519.51, 597,787.47 and 161,700.21 is: 242,553.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,519.51 : 597,787.47 = 161,700.21 : x
  2. Step 2: Convert to fraction form
    398,519.51/597,787.47 = 161,700.21/x
  3. Step 3: Cross multiply
    398,519.51x = 597,787.47 × 161,700.21
  4. Step 4: Simplify right side
    398,519.51x = 96,662,359,434.37
  5. Step 5: Solve for x
    x = 96,662,359,434.37/398,519.51
  6. Step 6: Final answer
    x = 242,553.65

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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.