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Finding the Fourth Proportional to 221,592.72, 305,808.72 and 126,108.08

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Solution

The fourth proportional to 221,592.72, 305,808.72 and 126,108.08 is: 174,035.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,592.72 : 305,808.72 = 126,108.08 : x
  2. Step 2: Convert to fraction form
    221,592.72/305,808.72 = 126,108.08/x
  3. Step 3: Cross multiply
    221,592.72x = 305,808.72 × 126,108.08
  4. Step 4: Simplify right side
    221,592.72x = 38,564,950,526.46
  5. Step 5: Solve for x
    x = 38,564,950,526.46/221,592.72
  6. Step 6: Final answer
    x = 174,035.28

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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.