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Finding the Fourth Proportional to 661,670.54, 992,411.93 and 212,333.30

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Solution

The fourth proportional to 661,670.54, 992,411.93 and 212,333.30 is: 318,469.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,670.54 : 992,411.93 = 212,333.30 : x
  2. Step 2: Convert to fraction form
    661,670.54/992,411.93 = 212,333.30/x
  3. Step 3: Cross multiply
    661,670.54x = 992,411.93 × 212,333.30
  4. Step 4: Simplify right side
    661,670.54x = 210,722,100,056.27
  5. Step 5: Solve for x
    x = 210,722,100,056.27/661,670.54
  6. Step 6: Final answer
    x = 318,469.82

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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.