Home / 378,734.22-522,656.01-208,974.42

Finding the Fourth Proportional to 378,734.22, 522,656.01 and 208,974.42

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Solution

The fourth proportional to 378,734.22, 522,656.01 and 208,974.42 is: 288,386.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,734.22 : 522,656.01 = 208,974.42 : x
  2. Step 2: Convert to fraction form
    378,734.22/522,656.01 = 208,974.42/x
  3. Step 3: Cross multiply
    378,734.22x = 522,656.01 × 208,974.42
  4. Step 4: Simplify right side
    378,734.22x = 109,221,736,549.26
  5. Step 5: Solve for x
    x = 109,221,736,549.26/378,734.22
  6. Step 6: Final answer
    x = 288,386.24

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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.