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Finding the Fourth Proportional to 400,443.98, 552,612.90 and 219,155.80

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Solution

The fourth proportional to 400,443.98, 552,612.90 and 219,155.80 is: 302,435.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,443.98 : 552,612.90 = 219,155.80 : x
  2. Step 2: Convert to fraction form
    400,443.98/552,612.90 = 219,155.80/x
  3. Step 3: Cross multiply
    400,443.98x = 552,612.90 × 219,155.80
  4. Step 4: Simplify right side
    400,443.98x = 121,108,320,808.29
  5. Step 5: Solve for x
    x = 121,108,320,808.29/400,443.98
  6. Step 6: Final answer
    x = 302,435.12

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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.