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Finding the Fourth Proportional to 221,457.50, 305,627.78 and 125,994.96

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Solution

The fourth proportional to 221,457.50, 305,627.78 and 125,994.96 is: 173,882.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,457.50 : 305,627.78 = 125,994.96 : x
  2. Step 2: Convert to fraction form
    221,457.50/305,627.78 = 125,994.96/x
  3. Step 3: Cross multiply
    221,457.50x = 305,627.78 × 125,994.96
  4. Step 4: Simplify right side
    221,457.50x = 38,507,559,915.99
  5. Step 5: Solve for x
    x = 38,507,559,915.99/221,457.50
  6. Step 6: Final answer
    x = 173,882.39

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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.