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Finding the Fourth Proportional to 345,008.58, 517,337.82 and 157,859.70

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Solution

The fourth proportional to 345,008.58, 517,337.82 and 157,859.70 is: 236,709.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,008.58 : 517,337.82 = 157,859.70 : x
  2. Step 2: Convert to fraction form
    345,008.58/517,337.82 = 157,859.70/x
  3. Step 3: Cross multiply
    345,008.58x = 517,337.82 × 157,859.70
  4. Step 4: Simplify right side
    345,008.58x = 81,666,793,063.85
  5. Step 5: Solve for x
    x = 81,666,793,063.85/345,008.58
  6. Step 6: Final answer
    x = 236,709.46

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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.