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Finding the Fourth Proportional to 296,938.80, 445,408.20 and 264,279.60

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Solution

The fourth proportional to 296,938.80, 445,408.20 and 264,279.60 is: 396,419.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,938.80 : 445,408.20 = 264,279.60 : x
  2. Step 2: Convert to fraction form
    296,938.80/445,408.20 = 264,279.60/x
  3. Step 3: Cross multiply
    296,938.80x = 445,408.20 × 264,279.60
  4. Step 4: Simplify right side
    296,938.80x = 117,712,300,932.72
  5. Step 5: Solve for x
    x = 117,712,300,932.72/296,938.80
  6. Step 6: Final answer
    x = 396,419.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.