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Finding the Fourth Proportional to 340,871.80, 511,461.30 and 163,310.20

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Solution

The fourth proportional to 340,871.80, 511,461.30 and 163,310.20 is: 245,038.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,871.80 : 511,461.30 = 163,310.20 : x
  2. Step 2: Convert to fraction form
    340,871.80/511,461.30 = 163,310.20/x
  3. Step 3: Cross multiply
    340,871.80x = 511,461.30 × 163,310.20
  4. Step 4: Simplify right side
    340,871.80x = 83,526,847,195.26
  5. Step 5: Solve for x
    x = 83,526,847,195.26/340,871.80
  6. Step 6: Final answer
    x = 245,038.89

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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.