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Finding the Fourth Proportional to 378,955.26, 568,435.32 and 260,266.77

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Solution

The fourth proportional to 378,955.26, 568,435.32 and 260,266.77 is: 390,401.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,955.26 : 568,435.32 = 260,266.77 : x
  2. Step 2: Convert to fraction form
    378,955.26/568,435.32 = 260,266.77/x
  3. Step 3: Cross multiply
    378,955.26x = 568,435.32 × 260,266.77
  4. Step 4: Simplify right side
    378,955.26x = 147,944,824,690.32
  5. Step 5: Solve for x
    x = 147,944,824,690.32/378,955.26
  6. Step 6: Final answer
    x = 390,401.82

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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.