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Finding the Fourth Proportional to 400,399.62, 552,551.51 and 219,111.54

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Solution

The fourth proportional to 400,399.62, 552,551.51 and 219,111.54 is: 302,373.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,399.62 : 552,551.51 = 219,111.54 : x
  2. Step 2: Convert to fraction form
    400,399.62/552,551.51 = 219,111.54/x
  3. Step 3: Cross multiply
    400,399.62x = 552,551.51 × 219,111.54
  4. Step 4: Simplify right side
    400,399.62x = 121,070,408,427.11
  5. Step 5: Solve for x
    x = 121,070,408,427.11/400,399.62
  6. Step 6: Final answer
    x = 302,373.94

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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.