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Finding the Fourth Proportional to 250,781.80, 375,735.28 and 208,930.72

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Solution

The fourth proportional to 250,781.80, 375,735.28 and 208,930.72 is: 313,031.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,781.80 : 375,735.28 = 208,930.72 : x
  2. Step 2: Convert to fraction form
    250,781.80/375,735.28 = 208,930.72/x
  3. Step 3: Cross multiply
    250,781.80x = 375,735.28 × 208,930.72
  4. Step 4: Simplify right side
    250,781.80x = 78,502,642,579.80
  5. Step 5: Solve for x
    x = 78,502,642,579.80/250,781.80
  6. Step 6: Final answer
    x = 313,031.66

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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.