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Finding the Fourth Proportional to 400,833.48, 553,150.27 and 219,551.90

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Solution

The fourth proportional to 400,833.48, 553,150.27 and 219,551.90 is: 302,981.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,833.48 : 553,150.27 = 219,551.90 : x
  2. Step 2: Convert to fraction form
    400,833.48/553,150.27 = 219,551.90/x
  3. Step 3: Cross multiply
    400,833.48x = 553,150.27 × 219,551.90
  4. Step 4: Simplify right side
    400,833.48x = 121,445,190,272.70
  5. Step 5: Solve for x
    x = 121,445,190,272.70/400,833.48
  6. Step 6: Final answer
    x = 302,981.65

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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.