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Finding the Fourth Proportional to 545,087.45, 752,213.18 and 303,369.98

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Solution

The fourth proportional to 545,087.45, 752,213.18 and 303,369.98 is: 418,646.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,087.45 : 752,213.18 = 303,369.98 : x
  2. Step 2: Convert to fraction form
    545,087.45/752,213.18 = 303,369.98/x
  3. Step 3: Cross multiply
    545,087.45x = 752,213.18 × 303,369.98
  4. Step 4: Simplify right side
    545,087.45x = 228,198,897,372.34
  5. Step 5: Solve for x
    x = 228,198,897,372.34/545,087.45
  6. Step 6: Final answer
    x = 418,646.40

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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.