Home / 400,973.12-553,342.89-219,691.92

Finding the Fourth Proportional to 400,973.12, 553,342.89 and 219,691.92

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Solution

The fourth proportional to 400,973.12, 553,342.89 and 219,691.92 is: 303,174.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,973.12 : 553,342.89 = 219,691.92 : x
  2. Step 2: Convert to fraction form
    400,973.12/553,342.89 = 219,691.92/x
  3. Step 3: Cross multiply
    400,973.12x = 553,342.89 × 219,691.92
  4. Step 4: Simplify right side
    400,973.12x = 121,564,961,922.45
  5. Step 5: Solve for x
    x = 121,564,961,922.45/400,973.12
  6. Step 6: Final answer
    x = 303,174.84

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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.