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Finding the Fourth Proportional to 329,807.98, 455,135.16 and 186,564.97

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Solution

The fourth proportional to 329,807.98, 455,135.16 and 186,564.97 is: 257,459.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,807.98 : 455,135.16 = 186,564.97 : x
  2. Step 2: Convert to fraction form
    329,807.98/455,135.16 = 186,564.97/x
  3. Step 3: Cross multiply
    329,807.98x = 455,135.16 × 186,564.97
  4. Step 4: Simplify right side
    329,807.98x = 84,912,277,471.35
  5. Step 5: Solve for x
    x = 84,912,277,471.35/329,807.98
  6. Step 6: Final answer
    x = 257,459.74

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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.