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Finding the Fourth Proportional to 543,362.40, 815,043.60 and 375,400.80

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Solution

The fourth proportional to 543,362.40, 815,043.60 and 375,400.80 is: 563,101.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,362.40 : 815,043.60 = 375,400.80 : x
  2. Step 2: Convert to fraction form
    543,362.40/815,043.60 = 375,400.80/x
  3. Step 3: Cross multiply
    543,362.40x = 815,043.60 × 375,400.80
  4. Step 4: Simplify right side
    543,362.40x = 305,968,019,474.88
  5. Step 5: Solve for x
    x = 305,968,019,474.88/543,362.40
  6. Step 6: Final answer
    x = 563,101.20

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Similar ratio
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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.