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Finding the Fourth Proportional to 250,135.79, 375,214.12 and 72,642.83

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Solution

The fourth proportional to 250,135.79, 375,214.12 and 72,642.83 is: 108,967.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,135.79 : 375,214.12 = 72,642.83 : x
  2. Step 2: Convert to fraction form
    250,135.79/375,214.12 = 72,642.83/x
  3. Step 3: Cross multiply
    250,135.79x = 375,214.12 × 72,642.83
  4. Step 4: Simplify right side
    250,135.79x = 27,256,613,475.08
  5. Step 5: Solve for x
    x = 27,256,613,475.08/250,135.79
  6. Step 6: Final answer
    x = 108,967.27

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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.