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Finding the Fourth Proportional to 287,841.60, 397,188.16 and 166,938.98

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Solution

The fourth proportional to 287,841.60, 397,188.16 and 166,938.98 is: 230,356.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,841.60 : 397,188.16 = 166,938.98 : x
  2. Step 2: Convert to fraction form
    287,841.60/397,188.16 = 166,938.98/x
  3. Step 3: Cross multiply
    287,841.60x = 397,188.16 × 166,938.98
  4. Step 4: Simplify right side
    287,841.60x = 66,306,183,895.19
  5. Step 5: Solve for x
    x = 66,306,183,895.19/287,841.60
  6. Step 6: Final answer
    x = 230,356.50

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.