Home / 283,324.18-390,986.48-155,999.80

Finding the Fourth Proportional to 283,324.18, 390,986.48 and 155,999.80

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Solution

The fourth proportional to 283,324.18, 390,986.48 and 155,999.80 is: 215,279.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,324.18 : 390,986.48 = 155,999.80 : x
  2. Step 2: Convert to fraction form
    283,324.18/390,986.48 = 155,999.80/x
  3. Step 3: Cross multiply
    283,324.18x = 390,986.48 × 155,999.80
  4. Step 4: Simplify right side
    283,324.18x = 60,993,812,682.70
  5. Step 5: Solve for x
    x = 60,993,812,682.70/283,324.18
  6. Step 6: Final answer
    x = 215,279.23

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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.