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Finding the Fourth Proportional to 303,328.80, 455,367.60 and 191,008.80

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Solution

The fourth proportional to 303,328.80, 455,367.60 and 191,008.80 is: 286,748.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,328.80 : 455,367.60 = 191,008.80 : x
  2. Step 2: Convert to fraction form
    303,328.80/455,367.60 = 191,008.80/x
  3. Step 3: Cross multiply
    303,328.80x = 455,367.60 × 191,008.80
  4. Step 4: Simplify right side
    303,328.80x = 86,979,218,834.88
  5. Step 5: Solve for x
    x = 86,979,218,834.88/303,328.80
  6. Step 6: Final answer
    x = 286,748.96

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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.