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Finding the Fourth Proportional to 223,572.52, 308,516.34 and 128,057.32

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Solution

The fourth proportional to 223,572.52, 308,516.34 and 128,057.32 is: 176,711.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,572.52 : 308,516.34 = 128,057.32 : x
  2. Step 2: Convert to fraction form
    223,572.52/308,516.34 = 128,057.32/x
  3. Step 3: Cross multiply
    223,572.52x = 308,516.34 × 128,057.32
  4. Step 4: Simplify right side
    223,572.52x = 39,507,775,676.61
  5. Step 5: Solve for x
    x = 39,507,775,676.61/223,572.52
  6. Step 6: Final answer
    x = 176,711.23

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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.