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Finding the Fourth Proportional to 341,948.80, 512,874.60 and 105,315.40

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Solution

The fourth proportional to 341,948.80, 512,874.60 and 105,315.40 is: 157,958.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,948.80 : 512,874.60 = 105,315.40 : x
  2. Step 2: Convert to fraction form
    341,948.80/512,874.60 = 105,315.40/x
  3. Step 3: Cross multiply
    341,948.80x = 512,874.60 × 105,315.40
  4. Step 4: Simplify right side
    341,948.80x = 54,013,593,648.84
  5. Step 5: Solve for x
    x = 54,013,593,648.84/341,948.80
  6. Step 6: Final answer
    x = 157,958.13

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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.