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Finding the Fourth Proportional to 310,979.37, 465,851.91 and 239,654.46

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Solution

The fourth proportional to 310,979.37, 465,851.91 and 239,654.46 is: 359,006.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,979.37 : 465,851.91 = 239,654.46 : x
  2. Step 2: Convert to fraction form
    310,979.37/465,851.91 = 239,654.46/x
  3. Step 3: Cross multiply
    310,979.37x = 465,851.91 × 239,654.46
  4. Step 4: Simplify right side
    310,979.37x = 111,643,487,931.02
  5. Step 5: Solve for x
    x = 111,643,487,931.02/310,979.37
  6. Step 6: Final answer
    x = 359,006.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.