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Finding the Fourth Proportional to 511,290.40, 766,928.40 and 230,807.20

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Solution

The fourth proportional to 511,290.40, 766,928.40 and 230,807.20 is: 346,207.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,290.40 : 766,928.40 = 230,807.20 : x
  2. Step 2: Convert to fraction form
    511,290.40/766,928.40 = 230,807.20/x
  3. Step 3: Cross multiply
    511,290.40x = 766,928.40 × 230,807.20
  4. Step 4: Simplify right side
    511,290.40x = 177,012,596,604.48
  5. Step 5: Solve for x
    x = 177,012,596,604.48/511,290.40
  6. Step 6: Final answer
    x = 346,207.55

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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.