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Finding the Fourth Proportional to 341,442.90, 512,219.58 and 128,227.38

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Solution

The fourth proportional to 341,442.90, 512,219.58 and 128,227.38 is: 192,361.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,442.90 : 512,219.58 = 128,227.38 : x
  2. Step 2: Convert to fraction form
    341,442.90/512,219.58 = 128,227.38/x
  3. Step 3: Cross multiply
    341,442.90x = 512,219.58 × 128,227.38
  4. Step 4: Simplify right side
    341,442.90x = 65,680,574,728.10
  5. Step 5: Solve for x
    x = 65,680,574,728.10/341,442.90
  6. Step 6: Final answer
    x = 192,361.81

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1.5x scale

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.