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Finding the Fourth Proportional to 217,111.40, 325,655.58 and 69,355.88

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Solution

The fourth proportional to 217,111.40, 325,655.58 and 69,355.88 is: 104,030.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,111.40 : 325,655.58 = 69,355.88 : x
  2. Step 2: Convert to fraction form
    217,111.40/325,655.58 = 69,355.88/x
  3. Step 3: Cross multiply
    217,111.40x = 325,655.58 × 69,355.88
  4. Step 4: Simplify right side
    217,111.40x = 22,586,129,327.81
  5. Step 5: Solve for x
    x = 22,586,129,327.81/217,111.40
  6. Step 6: Final answer
    x = 104,030.14

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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.