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Finding the Fourth Proportional to 427,998.60, 642,458.70 and 241,374.60

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Solution

The fourth proportional to 427,998.60, 642,458.70 and 241,374.60 is: 362,321.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,998.60 : 642,458.70 = 241,374.60 : x
  2. Step 2: Convert to fraction form
    427,998.60/642,458.70 = 241,374.60/x
  3. Step 3: Cross multiply
    427,998.60x = 642,458.70 × 241,374.60
  4. Step 4: Simplify right side
    427,998.60x = 155,073,211,729.02
  5. Step 5: Solve for x
    x = 155,073,211,729.02/427,998.60
  6. Step 6: Final answer
    x = 362,321.77

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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.