Home / 378,868.01-522,835.28-209,102.13

Finding the Fourth Proportional to 378,868.01, 522,835.28 and 209,102.13

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Solution

The fourth proportional to 378,868.01, 522,835.28 and 209,102.13 is: 288,559.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,868.01 : 522,835.28 = 209,102.13 : x
  2. Step 2: Convert to fraction form
    378,868.01/522,835.28 = 209,102.13/x
  3. Step 3: Cross multiply
    378,868.01x = 522,835.28 × 209,102.13
  4. Step 4: Simplify right side
    378,868.01x = 109,325,970,687.15
  5. Step 5: Solve for x
    x = 109,325,970,687.15/378,868.01
  6. Step 6: Final answer
    x = 288,559.52

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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.