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Finding the Fourth Proportional to 400,555.88, 552,767.80 and 219,267.92

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Solution

The fourth proportional to 400,555.88, 552,767.80 and 219,267.92 is: 302,590.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,555.88 : 552,767.80 = 219,267.92 : x
  2. Step 2: Convert to fraction form
    400,555.88/552,767.80 = 219,267.92/x
  3. Step 3: Cross multiply
    400,555.88x = 552,767.80 × 219,267.92
  4. Step 4: Simplify right side
    400,555.88x = 121,204,245,748.98
  5. Step 5: Solve for x
    x = 121,204,245,748.98/400,555.88
  6. Step 6: Final answer
    x = 302,590.10

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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.