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Finding the Fourth Proportional to 614,322.28, 921,103.26 and 239,905

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Solution

The fourth proportional to 614,322.28, 921,103.26 and 239,905 is: 359,709.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,322.28 : 921,103.26 = 239,905 : x
  2. Step 2: Convert to fraction form
    614,322.28/921,103.26 = 239,905/x
  3. Step 3: Cross multiply
    614,322.28x = 921,103.26 × 239,905
  4. Step 4: Simplify right side
    614,322.28x = 220,977,277,590.30
  5. Step 5: Solve for x
    x = 220,977,277,590.30/614,322.28
  6. Step 6: Final answer
    x = 359,709.04

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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.