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Finding the Fourth Proportional to 543,373.20, 813,999.60 and 355,816.08

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Solution

The fourth proportional to 543,373.20, 813,999.60 and 355,816.08 is: 533,029.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,373.20 : 813,999.60 = 355,816.08 : x
  2. Step 2: Convert to fraction form
    543,373.20/813,999.60 = 355,816.08/x
  3. Step 3: Cross multiply
    543,373.20x = 813,999.60 × 355,816.08
  4. Step 4: Simplify right side
    543,373.20x = 289,634,146,793.57
  5. Step 5: Solve for x
    x = 289,634,146,793.57/543,373.20
  6. Step 6: Final answer
    x = 533,029.87

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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.