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Finding the Fourth Proportional to 223,520.17, 308,448.45 and 126,730.54

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Solution

The fourth proportional to 223,520.17, 308,448.45 and 126,730.54 is: 174,882.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,520.17 : 308,448.45 = 126,730.54 : x
  2. Step 2: Convert to fraction form
    223,520.17/308,448.45 = 126,730.54/x
  3. Step 3: Cross multiply
    223,520.17x = 308,448.45 × 126,730.54
  4. Step 4: Simplify right side
    223,520.17x = 39,089,838,630.66
  5. Step 5: Solve for x
    x = 39,089,838,630.66/223,520.17
  6. Step 6: Final answer
    x = 174,882.82

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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.