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Finding the Fourth Proportional to 353,845.72, 488,327.61 and 266,474.40

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Solution

The fourth proportional to 353,845.72, 488,327.61 and 266,474.40 is: 367,750.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,845.72 : 488,327.61 = 266,474.40 : x
  2. Step 2: Convert to fraction form
    353,845.72/488,327.61 = 266,474.40/x
  3. Step 3: Cross multiply
    353,845.72x = 488,327.61 × 266,474.40
  4. Step 4: Simplify right side
    353,845.72x = 130,126,804,436.55
  5. Step 5: Solve for x
    x = 130,126,804,436.55/353,845.72
  6. Step 6: Final answer
    x = 367,750.12

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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.