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Finding the Fourth Proportional to 219,999.60, 329,999.40 and 79,740.72

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Solution

The fourth proportional to 219,999.60, 329,999.40 and 79,740.72 is: 119,611.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,999.60 : 329,999.40 = 79,740.72 : x
  2. Step 2: Convert to fraction form
    219,999.60/329,999.40 = 79,740.72/x
  3. Step 3: Cross multiply
    219,999.60x = 329,999.40 × 79,740.72
  4. Step 4: Simplify right side
    219,999.60x = 26,314,389,755.57
  5. Step 5: Solve for x
    x = 26,314,389,755.57/219,999.60
  6. Step 6: Final answer
    x = 119,611.08

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1.5x scale

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.