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Finding the Fourth Proportional to 385,254, 531,650.52 and 251,118

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Solution

The fourth proportional to 385,254, 531,650.52 and 251,118 is: 346,542.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,254 : 531,650.52 = 251,118 : x
  2. Step 2: Convert to fraction form
    385,254/531,650.52 = 251,118/x
  3. Step 3: Cross multiply
    385,254x = 531,650.52 × 251,118
  4. Step 4: Simplify right side
    385,254x = 133,507,015,281.36
  5. Step 5: Solve for x
    x = 133,507,015,281.36/385,254
  6. Step 6: Final answer
    x = 346,542.84

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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.