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Finding the Fourth Proportional to 340,808.80, 511,213.20 and 127,576.30

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Solution

The fourth proportional to 340,808.80, 511,213.20 and 127,576.30 is: 191,364.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,808.80 : 511,213.20 = 127,576.30 : x
  2. Step 2: Convert to fraction form
    340,808.80/511,213.20 = 127,576.30/x
  3. Step 3: Cross multiply
    340,808.80x = 511,213.20 × 127,576.30
  4. Step 4: Simplify right side
    340,808.80x = 65,218,688,567.16
  5. Step 5: Solve for x
    x = 65,218,688,567.16/340,808.80
  6. Step 6: Final answer
    x = 191,364.45

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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.