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Finding the Fourth Proportional to 223,339.78, 308,220.70 and 126,562.40

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Solution

The fourth proportional to 223,339.78, 308,220.70 and 126,562.40 is: 174,662.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,339.78 : 308,220.70 = 126,562.40 : x
  2. Step 2: Convert to fraction form
    223,339.78/308,220.70 = 126,562.40/x
  3. Step 3: Cross multiply
    223,339.78x = 308,220.70 × 126,562.40
  4. Step 4: Simplify right side
    223,339.78x = 39,009,151,521.68
  5. Step 5: Solve for x
    x = 39,009,151,521.68/223,339.78
  6. Step 6: Final answer
    x = 174,662.80

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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.