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Finding the Fourth Proportional to 551,958.15, 761,723.83 and 310,239.98

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Solution

The fourth proportional to 551,958.15, 761,723.83 and 310,239.98 is: 428,143.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,958.15 : 761,723.83 = 310,239.98 : x
  2. Step 2: Convert to fraction form
    551,958.15/761,723.83 = 310,239.98/x
  3. Step 3: Cross multiply
    551,958.15x = 761,723.83 × 310,239.98
  4. Step 4: Simplify right side
    551,958.15x = 236,317,185,784.72
  5. Step 5: Solve for x
    x = 236,317,185,784.72/551,958.15
  6. Step 6: Final answer
    x = 428,143.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.