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Finding the Fourth Proportional to 384,997.80, 576,403.20 and 364,051.20

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Solution

The fourth proportional to 384,997.80, 576,403.20 and 364,051.20 is: 545,042.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,997.80 : 576,403.20 = 364,051.20 : x
  2. Step 2: Convert to fraction form
    384,997.80/576,403.20 = 364,051.20/x
  3. Step 3: Cross multiply
    384,997.80x = 576,403.20 × 364,051.20
  4. Step 4: Simplify right side
    384,997.80x = 209,840,276,643.84
  5. Step 5: Solve for x
    x = 209,840,276,643.84/384,997.80
  6. Step 6: Final answer
    x = 545,042.79

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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.