Home / 491,471.49-736,583.84-221,311.38

Finding the Fourth Proportional to 491,471.49, 736,583.84 and 221,311.38

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Solution

The fourth proportional to 491,471.49, 736,583.84 and 221,311.38 is: 331,686.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,471.49 : 736,583.84 = 221,311.38 : x
  2. Step 2: Convert to fraction form
    491,471.49/736,583.84 = 221,311.38/x
  3. Step 3: Cross multiply
    491,471.49x = 736,583.84 × 221,311.38
  4. Step 4: Simplify right side
    491,471.49x = 163,014,386,116.10
  5. Step 5: Solve for x
    x = 163,014,386,116.10/491,471.49
  6. Step 6: Final answer
    x = 331,686.35

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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.