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Finding the Fourth Proportional to 259,394.20, 389,205.66 and 109,737.76

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Solution

The fourth proportional to 259,394.20, 389,205.66 and 109,737.76 is: 164,655.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,394.20 : 389,205.66 = 109,737.76 : x
  2. Step 2: Convert to fraction form
    259,394.20/389,205.66 = 109,737.76/x
  3. Step 3: Cross multiply
    259,394.20x = 389,205.66 × 109,737.76
  4. Step 4: Simplify right side
    259,394.20x = 42,710,557,307.72
  5. Step 5: Solve for x
    x = 42,710,557,307.72/259,394.20
  6. Step 6: Final answer
    x = 164,655.02

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1.5x scale

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.