Home / 260,119.95-390,211.20-91,605.47

Finding the Fourth Proportional to 260,119.95, 390,211.20 and 91,605.47

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Solution

The fourth proportional to 260,119.95, 390,211.20 and 91,605.47 is: 137,419.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,119.95 : 390,211.20 = 91,605.47 : x
  2. Step 2: Convert to fraction form
    260,119.95/390,211.20 = 91,605.47/x
  3. Step 3: Cross multiply
    260,119.95x = 390,211.20 × 91,605.47
  4. Step 4: Simplify right side
    260,119.95x = 35,745,478,424.21
  5. Step 5: Solve for x
    x = 35,745,478,424.21/260,119.95
  6. Step 6: Final answer
    x = 137,419.21

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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.