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Finding the Fourth Proportional to 250,717.45, 375,722.58 and 138,448.21

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Solution

The fourth proportional to 250,717.45, 375,722.58 and 138,448.21 is: 207,477.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,717.45 : 375,722.58 = 138,448.21 : x
  2. Step 2: Convert to fraction form
    250,717.45/375,722.58 = 138,448.21/x
  3. Step 3: Cross multiply
    250,717.45x = 375,722.58 × 138,448.21
  4. Step 4: Simplify right side
    250,717.45x = 52,018,118,657.58
  5. Step 5: Solve for x
    x = 52,018,118,657.58/250,717.45
  6. Step 6: Final answer
    x = 207,477.06

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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.