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Finding the Fourth Proportional to 345,101.49, 517,704.48 and 108,421.92

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Solution

The fourth proportional to 345,101.49, 517,704.48 and 108,421.92 is: 162,649.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,101.49 : 517,704.48 = 108,421.92 : x
  2. Step 2: Convert to fraction form
    345,101.49/517,704.48 = 108,421.92/x
  3. Step 3: Cross multiply
    345,101.49x = 517,704.48 × 108,421.92
  4. Step 4: Simplify right side
    345,101.49x = 56,130,513,714.20
  5. Step 5: Solve for x
    x = 56,130,513,714.20/345,101.49
  6. Step 6: Final answer
    x = 162,649.29

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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.