Home / 407,985.12-611,958.99-141,766.47

Finding the Fourth Proportional to 407,985.12, 611,958.99 and 141,766.47

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Solution

The fourth proportional to 407,985.12, 611,958.99 and 141,766.47 is: 212,643.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,985.12 : 611,958.99 = 141,766.47 : x
  2. Step 2: Convert to fraction form
    407,985.12/611,958.99 = 141,766.47/x
  3. Step 3: Cross multiply
    407,985.12x = 611,958.99 × 141,766.47
  4. Step 4: Simplify right side
    407,985.12x = 86,755,265,797.07
  5. Step 5: Solve for x
    x = 86,755,265,797.07/407,985.12
  6. Step 6: Final answer
    x = 212,643.21

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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.