Home / 543,509.20-815,263.80-169,531.60

Finding the Fourth Proportional to 543,509.20, 815,263.80 and 169,531.60

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Solution

The fourth proportional to 543,509.20, 815,263.80 and 169,531.60 is: 254,297.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,509.20 : 815,263.80 = 169,531.60 : x
  2. Step 2: Convert to fraction form
    543,509.20/815,263.80 = 169,531.60/x
  3. Step 3: Cross multiply
    543,509.20x = 815,263.80 × 169,531.60
  4. Step 4: Simplify right side
    543,509.20x = 138,212,976,436.08
  5. Step 5: Solve for x
    x = 138,212,976,436.08/543,509.20
  6. Step 6: Final answer
    x = 254,297.40

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Similar ratio
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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.