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Finding the Fourth Proportional to 384,041.20, 576,061.80 and 342,050.80

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Solution

The fourth proportional to 384,041.20, 576,061.80 and 342,050.80 is: 513,076.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,041.20 : 576,061.80 = 342,050.80 : x
  2. Step 2: Convert to fraction form
    384,041.20/576,061.80 = 342,050.80/x
  3. Step 3: Cross multiply
    384,041.20x = 576,061.80 × 342,050.80
  4. Step 4: Simplify right side
    384,041.20x = 197,042,399,539.44
  5. Step 5: Solve for x
    x = 197,042,399,539.44/384,041.20
  6. Step 6: Final answer
    x = 513,076.20

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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.