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Finding the Fourth Proportional to 265,915.62, 398,891.52 and 76,361.45

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Solution

The fourth proportional to 265,915.62, 398,891.52 and 76,361.45 is: 114,547.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,915.62 : 398,891.52 = 76,361.45 : x
  2. Step 2: Convert to fraction form
    265,915.62/398,891.52 = 76,361.45/x
  3. Step 3: Cross multiply
    265,915.62x = 398,891.52 × 76,361.45
  4. Step 4: Simplify right side
    265,915.62x = 30,459,932,865.45
  5. Step 5: Solve for x
    x = 30,459,932,865.45/265,915.62
  6. Step 6: Final answer
    x = 114,547.36

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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.