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Finding the Fourth Proportional to 287,151.69, 430,711.83 and 87,455.37

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Solution

The fourth proportional to 287,151.69, 430,711.83 and 87,455.37 is: 131,178.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,151.69 : 430,711.83 = 87,455.37 : x
  2. Step 2: Convert to fraction form
    287,151.69/430,711.83 = 87,455.37/x
  3. Step 3: Cross multiply
    287,151.69x = 430,711.83 × 87,455.37
  4. Step 4: Simplify right side
    287,151.69x = 37,668,062,456.03
  5. Step 5: Solve for x
    x = 37,668,062,456.03/287,151.69
  6. Step 6: Final answer
    x = 131,178.27

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.