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Finding the Fourth Proportional to 400,392.90, 552,542.25 and 219,104.87

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Solution

The fourth proportional to 400,392.90, 552,542.25 and 219,104.87 is: 302,364.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,392.90 : 552,542.25 = 219,104.87 : x
  2. Step 2: Convert to fraction form
    400,392.90/552,542.25 = 219,104.87/x
  3. Step 3: Cross multiply
    400,392.90x = 552,542.25 × 219,104.87
  4. Step 4: Simplify right side
    400,392.90x = 121,064,695,093.05
  5. Step 5: Solve for x
    x = 121,064,695,093.05/400,392.90
  6. Step 6: Final answer
    x = 302,364.74

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1.5x scale

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.