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Finding the Fourth Proportional to 343,346.80, 515,603.40 and 254,700.40

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Solution

The fourth proportional to 343,346.80, 515,603.40 and 254,700.40 is: 382,483.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,346.80 : 515,603.40 = 254,700.40 : x
  2. Step 2: Convert to fraction form
    343,346.80/515,603.40 = 254,700.40/x
  3. Step 3: Cross multiply
    343,346.80x = 515,603.40 × 254,700.40
  4. Step 4: Simplify right side
    343,346.80x = 131,324,392,221.36
  5. Step 5: Solve for x
    x = 131,324,392,221.36/343,346.80
  6. Step 6: Final answer
    x = 382,483.23

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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.