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Finding the Fourth Proportional to 210,940.94, 291,096.79 and 115,447.41

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Solution

The fourth proportional to 210,940.94, 291,096.79 and 115,447.41 is: 159,316.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,940.94 : 291,096.79 = 115,447.41 : x
  2. Step 2: Convert to fraction form
    210,940.94/291,096.79 = 115,447.41/x
  3. Step 3: Cross multiply
    210,940.94x = 291,096.79 × 115,447.41
  4. Step 4: Simplify right side
    210,940.94x = 33,606,370,176.20
  5. Step 5: Solve for x
    x = 33,606,370,176.20/210,940.94
  6. Step 6: Final answer
    x = 159,316.49

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1.5x scale

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.