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Finding the Fourth Proportional to 147,563.70, 221,320.79 and 40,958.49

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Solution

The fourth proportional to 147,563.70, 221,320.79 and 40,958.49 is: 61,430.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,563.70 : 221,320.79 = 40,958.49 : x
  2. Step 2: Convert to fraction form
    147,563.70/221,320.79 = 40,958.49/x
  3. Step 3: Cross multiply
    147,563.70x = 221,320.79 × 40,958.49
  4. Step 4: Simplify right side
    147,563.70x = 9,064,964,052.61
  5. Step 5: Solve for x
    x = 9,064,964,052.61/147,563.70
  6. Step 6: Final answer
    x = 61,430.86

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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.