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Finding the Fourth Proportional to 477,638.40, 659,140.96 and 262,773.85

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Solution

The fourth proportional to 477,638.40, 659,140.96 and 262,773.85 is: 362,627.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,638.40 : 659,140.96 = 262,773.85 : x
  2. Step 2: Convert to fraction form
    477,638.40/659,140.96 = 262,773.85/x
  3. Step 3: Cross multiply
    477,638.40x = 659,140.96 × 262,773.85
  4. Step 4: Simplify right side
    477,638.40x = 173,205,006,438.03
  5. Step 5: Solve for x
    x = 173,205,006,438.03/477,638.40
  6. Step 6: Final answer
    x = 362,627.90

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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.