Home / 385,815.40-578,528.70-228,092.20

Finding the Fourth Proportional to 385,815.40, 578,528.70 and 228,092.20

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Solution

The fourth proportional to 385,815.40, 578,528.70 and 228,092.20 is: 342,023.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,815.40 : 578,528.70 = 228,092.20 : x
  2. Step 2: Convert to fraction form
    385,815.40/578,528.70 = 228,092.20/x
  3. Step 3: Cross multiply
    385,815.40x = 578,528.70 × 228,092.20
  4. Step 4: Simplify right side
    385,815.40x = 131,957,883,946.14
  5. Step 5: Solve for x
    x = 131,957,883,946.14/385,815.40
  6. Step 6: Final answer
    x = 342,023.37

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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.