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Finding the Fourth Proportional to 329,811.48, 455,139.99 and 186,568.47

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Solution

The fourth proportional to 329,811.48, 455,139.99 and 186,568.47 is: 257,464.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,811.48 : 455,139.99 = 186,568.47 : x
  2. Step 2: Convert to fraction form
    329,811.48/455,139.99 = 186,568.47/x
  3. Step 3: Cross multiply
    329,811.48x = 455,139.99 × 186,568.47
  4. Step 4: Simplify right side
    329,811.48x = 84,914,771,570.12
  5. Step 5: Solve for x
    x = 84,914,771,570.12/329,811.48
  6. Step 6: Final answer
    x = 257,464.57

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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.