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Finding the Fourth Proportional to 239,079.54, 329,818.95 and 154,223.94

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Solution

The fourth proportional to 239,079.54, 329,818.95 and 154,223.94 is: 212,757.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,079.54 : 329,818.95 = 154,223.94 : x
  2. Step 2: Convert to fraction form
    239,079.54/329,818.95 = 154,223.94/x
  3. Step 3: Cross multiply
    239,079.54x = 329,818.95 × 154,223.94
  4. Step 4: Simplify right side
    239,079.54x = 50,865,977,955.66
  5. Step 5: Solve for x
    x = 50,865,977,955.66/239,079.54
  6. Step 6: Final answer
    x = 212,757.55

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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.