Home / 343,839.80-515,759.70-284,742.20

Finding the Fourth Proportional to 343,839.80, 515,759.70 and 284,742.20

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Solution

The fourth proportional to 343,839.80, 515,759.70 and 284,742.20 is: 427,113.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,839.80 : 515,759.70 = 284,742.20 : x
  2. Step 2: Convert to fraction form
    343,839.80/515,759.70 = 284,742.20/x
  3. Step 3: Cross multiply
    343,839.80x = 515,759.70 × 284,742.20
  4. Step 4: Simplify right side
    343,839.80x = 146,858,551,649.34
  5. Step 5: Solve for x
    x = 146,858,551,649.34/343,839.80
  6. Step 6: Final answer
    x = 427,113.30

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1.5x scale

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.