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Finding the Fourth Proportional to 345,049.83, 517,703.25 and 155,453.34

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Solution

The fourth proportional to 345,049.83, 517,703.25 and 155,453.34 is: 233,237.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,049.83 : 517,703.25 = 155,453.34 : x
  2. Step 2: Convert to fraction form
    345,049.83/517,703.25 = 155,453.34/x
  3. Step 3: Cross multiply
    345,049.83x = 517,703.25 × 155,453.34
  4. Step 4: Simplify right side
    345,049.83x = 80,478,699,341.36
  5. Step 5: Solve for x
    x = 80,478,699,341.36/345,049.83
  6. Step 6: Final answer
    x = 233,237.90

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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.