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Finding the Fourth Proportional to 351,767.43, 527,643.86 and 85,529.34

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Solution

The fourth proportional to 351,767.43, 527,643.86 and 85,529.34 is: 128,292.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,767.43 : 527,643.86 = 85,529.34 : x
  2. Step 2: Convert to fraction form
    351,767.43/527,643.86 = 85,529.34/x
  3. Step 3: Cross multiply
    351,767.43x = 527,643.86 × 85,529.34
  4. Step 4: Simplify right side
    351,767.43x = 45,129,030,673.21
  5. Step 5: Solve for x
    x = 45,129,030,673.21/351,767.43
  6. Step 6: Final answer
    x = 128,292.24

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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.