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Finding the Fourth Proportional to 400,854.27, 553,179.12 and 219,569.22

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Solution

The fourth proportional to 400,854.27, 553,179.12 and 219,569.22 is: 303,005.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,854.27 : 553,179.12 = 219,569.22 : x
  2. Step 2: Convert to fraction form
    400,854.27/553,179.12 = 219,569.22/x
  3. Step 3: Cross multiply
    400,854.27x = 553,179.12 × 219,569.22
  4. Step 4: Simplify right side
    400,854.27x = 121,461,107,898.69
  5. Step 5: Solve for x
    x = 121,461,107,898.69/400,854.27
  6. Step 6: Final answer
    x = 303,005.65

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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.