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Finding the Fourth Proportional to 248,443.96, 342,901.20 and 157,905.40

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Solution

The fourth proportional to 248,443.96, 342,901.20 and 157,905.40 is: 217,940.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,443.96 : 342,901.20 = 157,905.40 : x
  2. Step 2: Convert to fraction form
    248,443.96/342,901.20 = 157,905.40/x
  3. Step 3: Cross multiply
    248,443.96x = 342,901.20 × 157,905.40
  4. Step 4: Simplify right side
    248,443.96x = 54,145,951,146.48
  5. Step 5: Solve for x
    x = 54,145,951,146.48/248,443.96
  6. Step 6: Final answer
    x = 217,940.30

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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.