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Finding the Fourth Proportional to 214,607, 321,805.74 and 64,818.56

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Solution

The fourth proportional to 214,607, 321,805.74 and 64,818.56 is: 97,196.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,607 : 321,805.74 = 64,818.56 : x
  2. Step 2: Convert to fraction form
    214,607/321,805.74 = 64,818.56/x
  3. Step 3: Cross multiply
    214,607x = 321,805.74 × 64,818.56
  4. Step 4: Simplify right side
    214,607x = 20,858,984,666.53
  5. Step 5: Solve for x
    x = 20,858,984,666.53/214,607
  6. Step 6: Final answer
    x = 97,196.20

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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.