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Finding the Fourth Proportional to 400,402.83, 552,555.92 and 219,114.77

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Solution

The fourth proportional to 400,402.83, 552,555.92 and 219,114.77 is: 302,378.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,402.83 : 552,555.92 = 219,114.77 : x
  2. Step 2: Convert to fraction form
    400,402.83/552,555.92 = 219,114.77/x
  3. Step 3: Cross multiply
    400,402.83x = 552,555.92 × 219,114.77
  4. Step 4: Simplify right side
    400,402.83x = 121,073,162,675.42
  5. Step 5: Solve for x
    x = 121,073,162,675.42/400,402.83
  6. Step 6: Final answer
    x = 302,378.39

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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.