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Finding the Fourth Proportional to 348,718.80, 523,078.20 and 112,085.40

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Solution

The fourth proportional to 348,718.80, 523,078.20 and 112,085.40 is: 168,128.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,718.80 : 523,078.20 = 112,085.40 : x
  2. Step 2: Convert to fraction form
    348,718.80/523,078.20 = 112,085.40/x
  3. Step 3: Cross multiply
    348,718.80x = 523,078.20 × 112,085.40
  4. Step 4: Simplify right side
    348,718.80x = 58,629,429,278.28
  5. Step 5: Solve for x
    x = 58,629,429,278.28/348,718.80
  6. Step 6: Final answer
    x = 168,128.10

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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.