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Finding the Fourth Proportional to 378,046.80, 567,070.20 and 343,054.80

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Solution

The fourth proportional to 378,046.80, 567,070.20 and 343,054.80 is: 514,582.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,046.80 : 567,070.20 = 343,054.80 : x
  2. Step 2: Convert to fraction form
    378,046.80/567,070.20 = 343,054.80/x
  3. Step 3: Cross multiply
    378,046.80x = 567,070.20 × 343,054.80
  4. Step 4: Simplify right side
    378,046.80x = 194,536,154,046.96
  5. Step 5: Solve for x
    x = 194,536,154,046.96/378,046.80
  6. Step 6: Final answer
    x = 514,582.20

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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.