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Finding the Fourth Proportional to 400,767.04, 553,058.56 and 221,919.04

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Solution

The fourth proportional to 400,767.04, 553,058.56 and 221,919.04 is: 306,248.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,767.04 : 553,058.56 = 221,919.04 : x
  2. Step 2: Convert to fraction form
    400,767.04/553,058.56 = 221,919.04/x
  3. Step 3: Cross multiply
    400,767.04x = 553,058.56 × 221,919.04
  4. Step 4: Simplify right side
    400,767.04x = 122,734,224,698.98
  5. Step 5: Solve for x
    x = 122,734,224,698.98/400,767.04
  6. Step 6: Final answer
    x = 306,248.30

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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.