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Finding the Fourth Proportional to 212,914.37, 319,322.35 and 63,118.54

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Solution

The fourth proportional to 212,914.37, 319,322.35 and 63,118.54 is: 94,663.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,914.37 : 319,322.35 = 63,118.54 : x
  2. Step 2: Convert to fraction form
    212,914.37/319,322.35 = 63,118.54/x
  3. Step 3: Cross multiply
    212,914.37x = 319,322.35 × 63,118.54
  4. Step 4: Simplify right side
    212,914.37x = 20,155,160,999.42
  5. Step 5: Solve for x
    x = 20,155,160,999.42/212,914.37
  6. Step 6: Final answer
    x = 94,663.22

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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.