Home / 378,035.46-521,690.22-208,269.18

Finding the Fourth Proportional to 378,035.46, 521,690.22 and 208,269.18

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Solution

The fourth proportional to 378,035.46, 521,690.22 and 208,269.18 is: 287,412.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,035.46 : 521,690.22 = 208,269.18 : x
  2. Step 2: Convert to fraction form
    378,035.46/521,690.22 = 208,269.18/x
  3. Step 3: Cross multiply
    378,035.46x = 521,690.22 × 208,269.18
  4. Step 4: Simplify right side
    378,035.46x = 108,651,994,333.42
  5. Step 5: Solve for x
    x = 108,651,994,333.42/378,035.46
  6. Step 6: Final answer
    x = 287,412.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.