Home / 214,871.10-322,452.45-139,808.40

Finding the Fourth Proportional to 214,871.10, 322,452.45 and 139,808.40

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Solution

The fourth proportional to 214,871.10, 322,452.45 and 139,808.40 is: 209,807.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,871.10 : 322,452.45 = 139,808.40 : x
  2. Step 2: Convert to fraction form
    214,871.10/322,452.45 = 139,808.40/x
  3. Step 3: Cross multiply
    214,871.10x = 322,452.45 × 139,808.40
  4. Step 4: Simplify right side
    214,871.10x = 45,081,561,110.58
  5. Step 5: Solve for x
    x = 45,081,561,110.58/214,871.10
  6. Step 6: Final answer
    x = 209,807.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.