Home / 282,771.50-390,233.79-155,456.30

Finding the Fourth Proportional to 282,771.50, 390,233.79 and 155,456.30

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Solution

The fourth proportional to 282,771.50, 390,233.79 and 155,456.30 is: 214,534.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,771.50 : 390,233.79 = 155,456.30 : x
  2. Step 2: Convert to fraction form
    282,771.50/390,233.79 = 155,456.30/x
  3. Step 3: Cross multiply
    282,771.50x = 390,233.79 × 155,456.30
  4. Step 4: Simplify right side
    282,771.50x = 60,664,301,128.38
  5. Step 5: Solve for x
    x = 60,664,301,128.38/282,771.50
  6. Step 6: Final answer
    x = 214,534.71

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1.5x scale

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.