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Finding the Fourth Proportional to 491,616.40, 736,785.56 and 221,546.32

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Solution

The fourth proportional to 491,616.40, 736,785.56 and 221,546.32 is: 332,031.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,616.40 : 736,785.56 = 221,546.32 : x
  2. Step 2: Convert to fraction form
    491,616.40/736,785.56 = 221,546.32/x
  3. Step 3: Cross multiply
    491,616.40x = 736,785.56 × 221,546.32
  4. Step 4: Simplify right side
    491,616.40x = 163,232,129,447.14
  5. Step 5: Solve for x
    x = 163,232,129,447.14/491,616.40
  6. Step 6: Final answer
    x = 332,031.50

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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.