Home / 378,760.32-522,691.02-208,994.40

Finding the Fourth Proportional to 378,760.32, 522,691.02 and 208,994.40

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Solution

The fourth proportional to 378,760.32, 522,691.02 and 208,994.40 is: 288,413.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,760.32 : 522,691.02 = 208,994.40 : x
  2. Step 2: Convert to fraction form
    378,760.32/522,691.02 = 208,994.40/x
  3. Step 3: Cross multiply
    378,760.32x = 522,691.02 × 208,994.40
  4. Step 4: Simplify right side
    378,760.32x = 109,239,496,110.29
  5. Step 5: Solve for x
    x = 109,239,496,110.29/378,760.32
  6. Step 6: Final answer
    x = 288,413.25

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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.