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Finding the Fourth Proportional to 400,851.55, 553,175.02 and 219,574.77

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Solution

The fourth proportional to 400,851.55, 553,175.02 and 219,574.77 is: 303,013.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,851.55 : 553,175.02 = 219,574.77 : x
  2. Step 2: Convert to fraction form
    400,851.55/553,175.02 = 219,574.77/x
  3. Step 3: Cross multiply
    400,851.55x = 553,175.02 × 219,574.77
  4. Step 4: Simplify right side
    400,851.55x = 121,463,277,786.25
  5. Step 5: Solve for x
    x = 121,463,277,786.25/400,851.55
  6. Step 6: Final answer
    x = 303,013.12

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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.