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Finding the Fourth Proportional to 620,777.52, 931,166.28 and 221,402.16

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Solution

The fourth proportional to 620,777.52, 931,166.28 and 221,402.16 is: 332,103.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,777.52 : 931,166.28 = 221,402.16 : x
  2. Step 2: Convert to fraction form
    620,777.52/931,166.28 = 221,402.16/x
  3. Step 3: Cross multiply
    620,777.52x = 931,166.28 × 221,402.16
  4. Step 4: Simplify right side
    620,777.52x = 206,162,225,711.17
  5. Step 5: Solve for x
    x = 206,162,225,711.17/620,777.52
  6. Step 6: Final answer
    x = 332,103.24

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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.