Home / 282,756.53-390,194.10-155,431.20

Finding the Fourth Proportional to 282,756.53, 390,194.10 and 155,431.20

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Solution

The fourth proportional to 282,756.53, 390,194.10 and 155,431.20 is: 214,489.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,756.53 : 390,194.10 = 155,431.20 : x
  2. Step 2: Convert to fraction form
    282,756.53/390,194.10 = 155,431.20/x
  3. Step 3: Cross multiply
    282,756.53x = 390,194.10 × 155,431.20
  4. Step 4: Simplify right side
    282,756.53x = 60,648,337,195.92
  5. Step 5: Solve for x
    x = 60,648,337,195.92/282,756.53
  6. Step 6: Final answer
    x = 214,489.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.