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Finding the Fourth Proportional to 351,618.51, 527,427.77 and 85,377.23

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Solution

The fourth proportional to 351,618.51, 527,427.77 and 85,377.23 is: 128,065.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,618.51 : 527,427.77 = 85,377.23 : x
  2. Step 2: Convert to fraction form
    351,618.51/527,427.77 = 85,377.23/x
  3. Step 3: Cross multiply
    351,618.51x = 527,427.77 × 85,377.23
  4. Step 4: Simplify right side
    351,618.51x = 45,030,322,027.68
  5. Step 5: Solve for x
    x = 45,030,322,027.68/351,618.51
  6. Step 6: Final answer
    x = 128,065.85

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1.5x scale

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.