Home / 378,825.92-522,766.08-209,056.40

Finding the Fourth Proportional to 378,825.92, 522,766.08 and 209,056.40

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Solution

The fourth proportional to 378,825.92, 522,766.08 and 209,056.40 is: 288,490.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,825.92 : 522,766.08 = 209,056.40 : x
  2. Step 2: Convert to fraction form
    378,825.92/522,766.08 = 209,056.40/x
  3. Step 3: Cross multiply
    378,825.92x = 522,766.08 × 209,056.40
  4. Step 4: Simplify right side
    378,825.92x = 109,287,594,726.91
  5. Step 5: Solve for x
    x = 109,287,594,726.91/378,825.92
  6. Step 6: Final answer
    x = 288,490.28

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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.