Home / 345,988.20-519,273.90-156,739.80

Finding the Fourth Proportional to 345,988.20, 519,273.90 and 156,739.80

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Solution

The fourth proportional to 345,988.20, 519,273.90 and 156,739.80 is: 235,241.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,988.20 : 519,273.90 = 156,739.80 : x
  2. Step 2: Convert to fraction form
    345,988.20/519,273.90 = 156,739.80/x
  3. Step 3: Cross multiply
    345,988.20x = 519,273.90 × 156,739.80
  4. Step 4: Simplify right side
    345,988.20x = 81,390,887,231.22
  5. Step 5: Solve for x
    x = 81,390,887,231.22/345,988.20
  6. Step 6: Final answer
    x = 235,241.80

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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.