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Finding the Fourth Proportional to 218,577.92, 301,629.40 and 121,779.50

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Solution

The fourth proportional to 218,577.92, 301,629.40 and 121,779.50 is: 168,051.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,577.92 : 301,629.40 = 121,779.50 : x
  2. Step 2: Convert to fraction form
    218,577.92/301,629.40 = 121,779.50/x
  3. Step 3: Cross multiply
    218,577.92x = 301,629.40 × 121,779.50
  4. Step 4: Simplify right side
    218,577.92x = 36,732,277,517.30
  5. Step 5: Solve for x
    x = 36,732,277,517.30/218,577.92
  6. Step 6: Final answer
    x = 168,051.18

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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.