Home / 378,746.20-522,680.61-208,991.26

Finding the Fourth Proportional to 378,746.20, 522,680.61 and 208,991.26

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Solution

The fourth proportional to 378,746.20, 522,680.61 and 208,991.26 is: 288,413.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,746.20 : 522,680.61 = 208,991.26 : x
  2. Step 2: Convert to fraction form
    378,746.20/522,680.61 = 208,991.26/x
  3. Step 3: Cross multiply
    378,746.20x = 522,680.61 × 208,991.26
  4. Step 4: Simplify right side
    378,746.20x = 109,235,679,261.47
  5. Step 5: Solve for x
    x = 109,235,679,261.47/378,746.20
  6. Step 6: Final answer
    x = 288,413.93

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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.