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Finding the Fourth Proportional to 230,812.84, 318,520.86 and 128,837.41

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Solution

The fourth proportional to 230,812.84, 318,520.86 and 128,837.41 is: 177,795.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,812.84 : 318,520.86 = 128,837.41 : x
  2. Step 2: Convert to fraction form
    230,812.84/318,520.86 = 128,837.41/x
  3. Step 3: Cross multiply
    230,812.84x = 318,520.86 × 128,837.41
  4. Step 4: Simplify right side
    230,812.84x = 41,037,402,633.37
  5. Step 5: Solve for x
    x = 41,037,402,633.37/230,812.84
  6. Step 6: Final answer
    x = 177,795.15

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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.