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Finding the Fourth Proportional to 491,314.70, 736,963.83 and 221,292.66

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Solution

The fourth proportional to 491,314.70, 736,963.83 and 221,292.66 is: 331,935.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,314.70 : 736,963.83 = 221,292.66 : x
  2. Step 2: Convert to fraction form
    491,314.70/736,963.83 = 221,292.66/x
  3. Step 3: Cross multiply
    491,314.70x = 736,963.83 × 221,292.66
  4. Step 4: Simplify right side
    491,314.70x = 163,084,686,264.49
  5. Step 5: Solve for x
    x = 163,084,686,264.49/491,314.70
  6. Step 6: Final answer
    x = 331,935.29

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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.