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Finding the Fourth Proportional to 341,974.20, 512,961.30 and 105,389.40

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Solution

The fourth proportional to 341,974.20, 512,961.30 and 105,389.40 is: 158,084.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,974.20 : 512,961.30 = 105,389.40 : x
  2. Step 2: Convert to fraction form
    341,974.20/512,961.30 = 105,389.40/x
  3. Step 3: Cross multiply
    341,974.20x = 512,961.30 × 105,389.40
  4. Step 4: Simplify right side
    341,974.20x = 54,060,683,630.22
  5. Step 5: Solve for x
    x = 54,060,683,630.22/341,974.20
  6. Step 6: Final answer
    x = 158,084.10

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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.