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Finding the Fourth Proportional to 383,838.55, 575,629.16 and 127,612.01

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Solution

The fourth proportional to 383,838.55, 575,629.16 and 127,612.01 is: 191,375.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,838.55 : 575,629.16 = 127,612.01 : x
  2. Step 2: Convert to fraction form
    383,838.55/575,629.16 = 127,612.01/x
  3. Step 3: Cross multiply
    383,838.55x = 575,629.16 × 127,612.01
  4. Step 4: Simplify right side
    383,838.55x = 73,457,192,044.22
  5. Step 5: Solve for x
    x = 73,457,192,044.22/383,838.55
  6. Step 6: Final answer
    x = 191,375.23

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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.