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Finding the Fourth Proportional to 340,909.79, 511,361.30 and 130,547.73

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Solution

The fourth proportional to 340,909.79, 511,361.30 and 130,547.73 is: 195,820.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,909.79 : 511,361.30 = 130,547.73 : x
  2. Step 2: Convert to fraction form
    340,909.79/511,361.30 = 130,547.73/x
  3. Step 3: Cross multiply
    340,909.79x = 511,361.30 × 130,547.73
  4. Step 4: Simplify right side
    340,909.79x = 66,757,054,854.21
  5. Step 5: Solve for x
    x = 66,757,054,854.21/340,909.79
  6. Step 6: Final answer
    x = 195,820.29

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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.