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Finding the Fourth Proportional to 218,355.08, 301,335.88 and 122,865.16

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Solution

The fourth proportional to 218,355.08, 301,335.88 and 122,865.16 is: 169,557.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,355.08 : 301,335.88 = 122,865.16 : x
  2. Step 2: Convert to fraction form
    218,355.08/301,335.88 = 122,865.16/x
  3. Step 3: Cross multiply
    218,355.08x = 301,335.88 × 122,865.16
  4. Step 4: Simplify right side
    218,355.08x = 37,023,681,109.94
  5. Step 5: Solve for x
    x = 37,023,681,109.94/218,355.08
  6. Step 6: Final answer
    x = 169,557.22

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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.