Home / 378,972.16-522,967.88-209,202.64

Finding the Fourth Proportional to 378,972.16, 522,967.88 and 209,202.64

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Solution

The fourth proportional to 378,972.16, 522,967.88 and 209,202.64 is: 288,692.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,972.16 : 522,967.88 = 209,202.64 : x
  2. Step 2: Convert to fraction form
    378,972.16/522,967.88 = 209,202.64/x
  3. Step 3: Cross multiply
    378,972.16x = 522,967.88 × 209,202.64
  4. Step 4: Simplify right side
    378,972.16x = 109,406,261,131.20
  5. Step 5: Solve for x
    x = 109,406,261,131.20/378,972.16
  6. Step 6: Final answer
    x = 288,692.08

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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.