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Finding the Fourth Proportional to 303,712.20, 455,568.30 and 135,232.20

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Solution

The fourth proportional to 303,712.20, 455,568.30 and 135,232.20 is: 202,848.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,712.20 : 455,568.30 = 135,232.20 : x
  2. Step 2: Convert to fraction form
    303,712.20/455,568.30 = 135,232.20/x
  3. Step 3: Cross multiply
    303,712.20x = 455,568.30 × 135,232.20
  4. Step 4: Simplify right side
    303,712.20x = 61,607,503,459.26
  5. Step 5: Solve for x
    x = 61,607,503,459.26/303,712.20
  6. Step 6: Final answer
    x = 202,848.30

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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.