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Finding the Fourth Proportional to 545,028.59, 752,128.97 and 303,310.82

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Solution

The fourth proportional to 545,028.59, 752,128.97 and 303,310.82 is: 418,563.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,028.59 : 752,128.97 = 303,310.82 : x
  2. Step 2: Convert to fraction form
    545,028.59/752,128.97 = 303,310.82/x
  3. Step 3: Cross multiply
    545,028.59x = 752,128.97 × 303,310.82
  4. Step 4: Simplify right side
    545,028.59x = 228,128,855,000.22
  5. Step 5: Solve for x
    x = 228,128,855,000.22/545,028.59
  6. Step 6: Final answer
    x = 418,563.10

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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.