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Finding the Fourth Proportional to 341,290.46, 512,018.15 and 128,060.12

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Solution

The fourth proportional to 341,290.46, 512,018.15 and 128,060.12 is: 192,121.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,290.46 : 512,018.15 = 128,060.12 : x
  2. Step 2: Convert to fraction form
    341,290.46/512,018.15 = 128,060.12/x
  3. Step 3: Cross multiply
    341,290.46x = 512,018.15 × 128,060.12
  4. Step 4: Simplify right side
    341,290.46x = 65,569,106,370.92
  5. Step 5: Solve for x
    x = 65,569,106,370.92/341,290.46
  6. Step 6: Final answer
    x = 192,121.12

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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.