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Finding the Fourth Proportional to 210,495.68, 315,785.03 and 68,314.44

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Solution

The fourth proportional to 210,495.68, 315,785.03 and 68,314.44 is: 102,485.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,495.68 : 315,785.03 = 68,314.44 : x
  2. Step 2: Convert to fraction form
    210,495.68/315,785.03 = 68,314.44/x
  3. Step 3: Cross multiply
    210,495.68x = 315,785.03 × 68,314.44
  4. Step 4: Simplify right side
    210,495.68x = 21,572,677,484.83
  5. Step 5: Solve for x
    x = 21,572,677,484.83/210,495.68
  6. Step 6: Final answer
    x = 102,485.13

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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.