Home / 377,646.20-521,109-222,587.36

Finding the Fourth Proportional to 377,646.20, 521,109 and 222,587.36

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Solution

The fourth proportional to 377,646.20, 521,109 and 222,587.36 is: 307,145.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,646.20 : 521,109 = 222,587.36 : x
  2. Step 2: Convert to fraction form
    377,646.20/521,109 = 222,587.36/x
  3. Step 3: Cross multiply
    377,646.20x = 521,109 × 222,587.36
  4. Step 4: Simplify right side
    377,646.20x = 115,992,276,582.24
  5. Step 5: Solve for x
    x = 115,992,276,582.24/377,646.20
  6. Step 6: Final answer
    x = 307,145.36

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1.5x scale

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.