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Finding the Fourth Proportional to 400,447.40, 552,605.09 and 219,155.42

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Solution

The fourth proportional to 400,447.40, 552,605.09 and 219,155.42 is: 302,427.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,447.40 : 552,605.09 = 219,155.42 : x
  2. Step 2: Convert to fraction form
    400,447.40/552,605.09 = 219,155.42/x
  3. Step 3: Cross multiply
    400,447.40x = 552,605.09 × 219,155.42
  4. Step 4: Simplify right side
    400,447.40x = 121,106,400,878.82
  5. Step 5: Solve for x
    x = 121,106,400,878.82/400,447.40
  6. Step 6: Final answer
    x = 302,427.74

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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.