Home / 282,945.92-390,453.24-155,613.28

Finding the Fourth Proportional to 282,945.92, 390,453.24 and 155,613.28

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Solution

The fourth proportional to 282,945.92, 390,453.24 and 155,613.28 is: 214,739.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,945.92 : 390,453.24 = 155,613.28 : x
  2. Step 2: Convert to fraction form
    282,945.92/390,453.24 = 155,613.28/x
  3. Step 3: Cross multiply
    282,945.92x = 390,453.24 × 155,613.28
  4. Step 4: Simplify right side
    282,945.92x = 60,759,709,363.03
  5. Step 5: Solve for x
    x = 60,759,709,363.03/282,945.92
  6. Step 6: Final answer
    x = 214,739.66

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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.