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Finding the Fourth Proportional to 254,205.72, 381,310.79 and 64,666.28

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Solution

The fourth proportional to 254,205.72, 381,310.79 and 64,666.28 is: 96,999.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,205.72 : 381,310.79 = 64,666.28 : x
  2. Step 2: Convert to fraction form
    254,205.72/381,310.79 = 64,666.28/x
  3. Step 3: Cross multiply
    254,205.72x = 381,310.79 × 64,666.28
  4. Step 4: Simplify right side
    254,205.72x = 24,657,950,943.11
  5. Step 5: Solve for x
    x = 24,657,950,943.11/254,205.72
  6. Step 6: Final answer
    x = 96,999.98

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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.