Home / 378,760.05-522,688.28-208,994.04

Finding the Fourth Proportional to 378,760.05, 522,688.28 and 208,994.04

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Solution

The fourth proportional to 378,760.05, 522,688.28 and 208,994.04 is: 288,411.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,760.05 : 522,688.28 = 208,994.04 : x
  2. Step 2: Convert to fraction form
    378,760.05/522,688.28 = 208,994.04/x
  3. Step 3: Cross multiply
    378,760.05x = 522,688.28 × 208,994.04
  4. Step 4: Simplify right side
    378,760.05x = 109,238,734,252.88
  5. Step 5: Solve for x
    x = 109,238,734,252.88/378,760.05
  6. Step 6: Final answer
    x = 288,411.45

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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.