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Finding the Fourth Proportional to 221,555.53, 332,368.43 and 79,397.74

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Solution

The fourth proportional to 221,555.53, 332,368.43 and 79,397.74 is: 119,109.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,555.53 : 332,368.43 = 79,397.74 : x
  2. Step 2: Convert to fraction form
    221,555.53/332,368.43 = 79,397.74/x
  3. Step 3: Cross multiply
    221,555.53x = 332,368.43 × 79,397.74
  4. Step 4: Simplify right side
    221,555.53x = 26,389,302,522.00
  5. Step 5: Solve for x
    x = 26,389,302,522.00/221,555.53
  6. Step 6: Final answer
    x = 119,109.20

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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.