Home / 400,818.18-553,137.42-219,537.72

Finding the Fourth Proportional to 400,818.18, 553,137.42 and 219,537.72

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Solution

The fourth proportional to 400,818.18, 553,137.42 and 219,537.72 is: 302,966.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,818.18 : 553,137.42 = 219,537.72 : x
  2. Step 2: Convert to fraction form
    400,818.18/553,137.42 = 219,537.72/x
  3. Step 3: Cross multiply
    400,818.18x = 553,137.42 × 219,537.72
  4. Step 4: Simplify right side
    400,818.18x = 121,434,528,033.48
  5. Step 5: Solve for x
    x = 121,434,528,033.48/400,818.18
  6. Step 6: Final answer
    x = 302,966.62

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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.