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Finding the Fourth Proportional to 223,411.72, 308,308.98 and 122,810.44

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Solution

The fourth proportional to 223,411.72, 308,308.98 and 122,810.44 is: 169,478.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,411.72 : 308,308.98 = 122,810.44 : x
  2. Step 2: Convert to fraction form
    223,411.72/308,308.98 = 122,810.44/x
  3. Step 3: Cross multiply
    223,411.72x = 308,308.98 × 122,810.44
  4. Step 4: Simplify right side
    223,411.72x = 37,863,561,489.75
  5. Step 5: Solve for x
    x = 37,863,561,489.75/223,411.72
  6. Step 6: Final answer
    x = 169,478.85

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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.