Home / 400,619.31-552,861.18-219,328.20

Finding the Fourth Proportional to 400,619.31, 552,861.18 and 219,328.20

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Solution

The fourth proportional to 400,619.31, 552,861.18 and 219,328.20 is: 302,676.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,619.31 : 552,861.18 = 219,328.20 : x
  2. Step 2: Convert to fraction form
    400,619.31/552,861.18 = 219,328.20/x
  3. Step 3: Cross multiply
    400,619.31x = 552,861.18 × 219,328.20
  4. Step 4: Simplify right side
    400,619.31x = 121,258,047,459.28
  5. Step 5: Solve for x
    x = 121,258,047,459.28/400,619.31
  6. Step 6: Final answer
    x = 302,676.49

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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.