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Finding the Fourth Proportional to 303,602.64, 455,325.84 and 90,315.12

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Solution

The fourth proportional to 303,602.64, 455,325.84 and 90,315.12 is: 135,449.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,602.64 : 455,325.84 = 90,315.12 : x
  2. Step 2: Convert to fraction form
    303,602.64/455,325.84 = 90,315.12/x
  3. Step 3: Cross multiply
    303,602.64x = 455,325.84 × 90,315.12
  4. Step 4: Simplify right side
    303,602.64x = 41,122,807,878.70
  5. Step 5: Solve for x
    x = 41,122,807,878.70/303,602.64
  6. Step 6: Final answer
    x = 135,449.44

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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.