Home / 260,328.29-390,046.66-142,082.60

Finding the Fourth Proportional to 260,328.29, 390,046.66 and 142,082.60

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Solution

The fourth proportional to 260,328.29, 390,046.66 and 142,082.60 is: 212,880.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,328.29 : 390,046.66 = 142,082.60 : x
  2. Step 2: Convert to fraction form
    260,328.29/390,046.66 = 142,082.60/x
  3. Step 3: Cross multiply
    260,328.29x = 390,046.66 × 142,082.60
  4. Step 4: Simplify right side
    260,328.29x = 55,418,841,268.68
  5. Step 5: Solve for x
    x = 55,418,841,268.68/260,328.29
  6. Step 6: Final answer
    x = 212,880.60

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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.