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Finding the Fourth Proportional to 664,903.60, 997,258.20 and 191,539.60

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Solution

The fourth proportional to 664,903.60, 997,258.20 and 191,539.60 is: 287,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,903.60 : 997,258.20 = 191,539.60 : x
  2. Step 2: Convert to fraction form
    664,903.60/997,258.20 = 191,539.60/x
  3. Step 3: Cross multiply
    664,903.60x = 997,258.20 × 191,539.60
  4. Step 4: Simplify right side
    664,903.60x = 191,014,436,724.72
  5. Step 5: Solve for x
    x = 191,014,436,724.72/664,903.60
  6. Step 6: Final answer
    x = 287,281.40

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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.