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Finding the Fourth Proportional to 400,855.02, 553,180.14 and 219,569.97

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Solution

The fourth proportional to 400,855.02, 553,180.14 and 219,569.97 is: 303,006.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,855.02 : 553,180.14 = 219,569.97 : x
  2. Step 2: Convert to fraction form
    400,855.02/553,180.14 = 219,569.97/x
  3. Step 3: Cross multiply
    400,855.02x = 553,180.14 × 219,569.97
  4. Step 4: Simplify right side
    400,855.02x = 121,461,746,744.40
  5. Step 5: Solve for x
    x = 121,461,746,744.40/400,855.02
  6. Step 6: Final answer
    x = 303,006.67

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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.