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Finding the Fourth Proportional to 287,558.40, 431,337.60 and 182,841.60

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Solution

The fourth proportional to 287,558.40, 431,337.60 and 182,841.60 is: 274,262.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,558.40 : 431,337.60 = 182,841.60 : x
  2. Step 2: Convert to fraction form
    287,558.40/431,337.60 = 182,841.60/x
  3. Step 3: Cross multiply
    287,558.40x = 431,337.60 × 182,841.60
  4. Step 4: Simplify right side
    287,558.40x = 78,866,456,924.16
  5. Step 5: Solve for x
    x = 78,866,456,924.16/287,558.40
  6. Step 6: Final answer
    x = 274,262.40

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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.