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Finding the Fourth Proportional to 303,855.40, 455,809.02 and 79,245.64

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Solution

The fourth proportional to 303,855.40, 455,809.02 and 79,245.64 is: 118,875.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,855.40 : 455,809.02 = 79,245.64 : x
  2. Step 2: Convert to fraction form
    303,855.40/455,809.02 = 79,245.64/x
  3. Step 3: Cross multiply
    303,855.40x = 455,809.02 × 79,245.64
  4. Step 4: Simplify right side
    303,855.40x = 36,120,877,507.67
  5. Step 5: Solve for x
    x = 36,120,877,507.67/303,855.40
  6. Step 6: Final answer
    x = 118,875.22

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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.