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Finding the Fourth Proportional to 381,893.35, 572,922.66 and 145,240.51

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Solution

The fourth proportional to 381,893.35, 572,922.66 and 145,240.51 is: 217,892.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,893.35 : 572,922.66 = 145,240.51 : x
  2. Step 2: Convert to fraction form
    381,893.35/572,922.66 = 145,240.51/x
  3. Step 3: Cross multiply
    381,893.35x = 572,922.66 × 145,240.51
  4. Step 4: Simplify right side
    381,893.35x = 83,211,579,328.96
  5. Step 5: Solve for x
    x = 83,211,579,328.96/381,893.35
  6. Step 6: Final answer
    x = 217,892.19

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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.