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Finding the Fourth Proportional to 287,583.80, 431,375.70 and 181,295.60

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Solution

The fourth proportional to 287,583.80, 431,375.70 and 181,295.60 is: 271,943.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,583.80 : 431,375.70 = 181,295.60 : x
  2. Step 2: Convert to fraction form
    287,583.80/431,375.70 = 181,295.60/x
  3. Step 3: Cross multiply
    287,583.80x = 431,375.70 × 181,295.60
  4. Step 4: Simplify right side
    287,583.80x = 78,206,516,356.92
  5. Step 5: Solve for x
    x = 78,206,516,356.92/287,583.80
  6. Step 6: Final answer
    x = 271,943.40

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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.