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Finding the Fourth Proportional to 376,857.16, 565,373.12 and 124,128.55

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Solution

The fourth proportional to 376,857.16, 565,373.12 and 124,128.55 is: 186,221.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,857.16 : 565,373.12 = 124,128.55 : x
  2. Step 2: Convert to fraction form
    376,857.16/565,373.12 = 124,128.55/x
  3. Step 3: Cross multiply
    376,857.16x = 565,373.12 × 124,128.55
  4. Step 4: Simplify right side
    376,857.16x = 70,178,945,680.65
  5. Step 5: Solve for x
    x = 70,178,945,680.65/376,857.16
  6. Step 6: Final answer
    x = 186,221.61

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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.