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Finding the Fourth Proportional to 545,090.42, 752,249.55 and 303,388.47

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Solution

The fourth proportional to 545,090.42, 752,249.55 and 303,388.47 is: 418,689.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,090.42 : 752,249.55 = 303,388.47 : x
  2. Step 2: Convert to fraction form
    545,090.42/752,249.55 = 303,388.47/x
  3. Step 3: Cross multiply
    545,090.42x = 752,249.55 × 303,388.47
  4. Step 4: Simplify right side
    545,090.42x = 228,223,840,032.69
  5. Step 5: Solve for x
    x = 228,223,840,032.69/545,090.42
  6. Step 6: Final answer
    x = 418,689.88

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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.