Home / 260,329.29-390,048.16-142,083.60

Finding the Fourth Proportional to 260,329.29, 390,048.16 and 142,083.60

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Solution

The fourth proportional to 260,329.29, 390,048.16 and 142,083.60 is: 212,882.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,329.29 : 390,048.16 = 142,083.60 : x
  2. Step 2: Convert to fraction form
    260,329.29/390,048.16 = 142,083.60/x
  3. Step 3: Cross multiply
    260,329.29x = 390,048.16 × 142,083.60
  4. Step 4: Simplify right side
    260,329.29x = 55,419,446,746.18
  5. Step 5: Solve for x
    x = 55,419,446,746.18/260,329.29
  6. Step 6: Final answer
    x = 212,882.10

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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.