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Finding the Fourth Proportional to 260,077.84, 390,229.44 and 91,718.47

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Solution

The fourth proportional to 260,077.84, 390,229.44 and 91,718.47 is: 137,617.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,077.84 : 390,229.44 = 91,718.47 : x
  2. Step 2: Convert to fraction form
    260,077.84/390,229.44 = 91,718.47/x
  3. Step 3: Cross multiply
    260,077.84x = 390,229.44 × 91,718.47
  4. Step 4: Simplify right side
    260,077.84x = 35,791,247,185.76
  5. Step 5: Solve for x
    x = 35,791,247,185.76/260,077.84
  6. Step 6: Final answer
    x = 137,617.44

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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.