Home / 400,902.12-553,244.40-219,625.20

Finding the Fourth Proportional to 400,902.12, 553,244.40 and 219,625.20

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Solution

The fourth proportional to 400,902.12, 553,244.40 and 219,625.20 is: 303,082.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,902.12 : 553,244.40 = 219,625.20 : x
  2. Step 2: Convert to fraction form
    400,902.12/553,244.40 = 219,625.20/x
  3. Step 3: Cross multiply
    400,902.12x = 553,244.40 × 219,625.20
  4. Step 4: Simplify right side
    400,902.12x = 121,506,411,998.88
  5. Step 5: Solve for x
    x = 121,506,411,998.88/400,902.12
  6. Step 6: Final answer
    x = 303,082.49

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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.