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Finding the Fourth Proportional to 543,364.20, 815,435.10 and 228,047.40

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Solution

The fourth proportional to 543,364.20, 815,435.10 and 228,047.40 is: 342,234.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,364.20 : 815,435.10 = 228,047.40 : x
  2. Step 2: Convert to fraction form
    543,364.20/815,435.10 = 228,047.40/x
  3. Step 3: Cross multiply
    543,364.20x = 815,435.10 × 228,047.40
  4. Step 4: Simplify right side
    543,364.20x = 185,957,854,423.74
  5. Step 5: Solve for x
    x = 185,957,854,423.74/543,364.20
  6. Step 6: Final answer
    x = 342,234.28

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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.