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Finding the Fourth Proportional to 250,710.66, 375,712.43 and 138,441.42

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Solution

The fourth proportional to 250,710.66, 375,712.43 and 138,441.42 is: 207,466.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,710.66 : 375,712.43 = 138,441.42 : x
  2. Step 2: Convert to fraction form
    250,710.66/375,712.43 = 138,441.42/x
  3. Step 3: Cross multiply
    250,710.66x = 375,712.43 × 138,441.42
  4. Step 4: Simplify right side
    250,710.66x = 52,014,161,628.64
  5. Step 5: Solve for x
    x = 52,014,161,628.64/250,710.66
  6. Step 6: Final answer
    x = 207,466.89

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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.