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Finding the Fourth Proportional to 304,770.28, 420,790.80 and 190,093.72

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Solution

The fourth proportional to 304,770.28, 420,790.80 and 190,093.72 is: 262,458.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,770.28 : 420,790.80 = 190,093.72 : x
  2. Step 2: Convert to fraction form
    304,770.28/420,790.80 = 190,093.72/x
  3. Step 3: Cross multiply
    304,770.28x = 420,790.80 × 190,093.72
  4. Step 4: Simplify right side
    304,770.28x = 79,989,688,513.78
  5. Step 5: Solve for x
    x = 79,989,688,513.78/304,770.28
  6. Step 6: Final answer
    x = 262,458.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.