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Finding the Fourth Proportional to 383,839.55, 575,630.66 and 127,613.01

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Solution

The fourth proportional to 383,839.55, 575,630.66 and 127,613.01 is: 191,376.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,839.55 : 575,630.66 = 127,613.01 : x
  2. Step 2: Convert to fraction form
    383,839.55/575,630.66 = 127,613.01/x
  3. Step 3: Cross multiply
    383,839.55x = 575,630.66 × 127,613.01
  4. Step 4: Simplify right side
    383,839.55x = 73,457,961,170.89
  5. Step 5: Solve for x
    x = 73,457,961,170.89/383,839.55
  6. Step 6: Final answer
    x = 191,376.74

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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.