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Finding the Fourth Proportional to 228,477.79, 315,309.20 and 126,503.24

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Solution

The fourth proportional to 228,477.79, 315,309.20 and 126,503.24 is: 174,579.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,477.79 : 315,309.20 = 126,503.24 : x
  2. Step 2: Convert to fraction form
    228,477.79/315,309.20 = 126,503.24/x
  3. Step 3: Cross multiply
    228,477.79x = 315,309.20 × 126,503.24
  4. Step 4: Simplify right side
    228,477.79x = 39,887,635,557.56
  5. Step 5: Solve for x
    x = 39,887,635,557.56/228,477.79
  6. Step 6: Final answer
    x = 174,579.93

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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.