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Finding the Fourth Proportional to 221,724, 332,588.88 and 73,980

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Solution

The fourth proportional to 221,724, 332,588.88 and 73,980 is: 110,970.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,724 : 332,588.88 = 73,980 : x
  2. Step 2: Convert to fraction form
    221,724/332,588.88 = 73,980/x
  3. Step 3: Cross multiply
    221,724x = 332,588.88 × 73,980
  4. Step 4: Simplify right side
    221,724x = 24,604,925,342.40
  5. Step 5: Solve for x
    x = 24,604,925,342.40/221,724
  6. Step 6: Final answer
    x = 110,970.96

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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.