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Finding the Fourth Proportional to 491,322.72, 736,975.81 and 221,300.66

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Solution

The fourth proportional to 491,322.72, 736,975.81 and 221,300.66 is: 331,947.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,322.72 : 736,975.81 = 221,300.66 : x
  2. Step 2: Convert to fraction form
    491,322.72/736,975.81 = 221,300.66/x
  3. Step 3: Cross multiply
    491,322.72x = 736,975.81 × 221,300.66
  4. Step 4: Simplify right side
    491,322.72x = 163,093,233,157.04
  5. Step 5: Solve for x
    x = 163,093,233,157.04/491,322.72
  6. Step 6: Final answer
    x = 331,947.27

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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.