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Finding the Fourth Proportional to 259,658.90, 389,488.35 and 119,690.90

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Solution

The fourth proportional to 259,658.90, 389,488.35 and 119,690.90 is: 179,536.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,658.90 : 389,488.35 = 119,690.90 : x
  2. Step 2: Convert to fraction form
    259,658.90/389,488.35 = 119,690.90/x
  3. Step 3: Cross multiply
    259,658.90x = 389,488.35 × 119,690.90
  4. Step 4: Simplify right side
    259,658.90x = 46,618,211,151.02
  5. Step 5: Solve for x
    x = 46,618,211,151.02/259,658.90
  6. Step 6: Final answer
    x = 179,536.35

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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.