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Finding the Fourth Proportional to 303,126.80, 418,141.31 and 189,752.72

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Solution

The fourth proportional to 303,126.80, 418,141.31 and 189,752.72 is: 261,750.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,126.80 : 418,141.31 = 189,752.72 : x
  2. Step 2: Convert to fraction form
    303,126.80/418,141.31 = 189,752.72/x
  3. Step 3: Cross multiply
    303,126.80x = 418,141.31 × 189,752.72
  4. Step 4: Simplify right side
    303,126.80x = 79,343,447,877.39
  5. Step 5: Solve for x
    x = 79,343,447,877.39/303,126.80
  6. Step 6: Final answer
    x = 261,750.03

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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.