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Finding the Fourth Proportional to 340,717.80, 511,076.70 and 163,133.40

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Solution

The fourth proportional to 340,717.80, 511,076.70 and 163,133.40 is: 244,700.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,717.80 : 511,076.70 = 163,133.40 : x
  2. Step 2: Convert to fraction form
    340,717.80/511,076.70 = 163,133.40/x
  3. Step 3: Cross multiply
    340,717.80x = 511,076.70 × 163,133.40
  4. Step 4: Simplify right side
    340,717.80x = 83,373,679,731.78
  5. Step 5: Solve for x
    x = 83,373,679,731.78/340,717.80
  6. Step 6: Final answer
    x = 244,700.10

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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.