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Finding the Fourth Proportional to 287,225.60, 430,900.48 and 87,540.80

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Solution

The fourth proportional to 287,225.60, 430,900.48 and 87,540.80 is: 131,330.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,225.60 : 430,900.48 = 87,540.80 : x
  2. Step 2: Convert to fraction form
    287,225.60/430,900.48 = 87,540.80/x
  3. Step 3: Cross multiply
    287,225.60x = 430,900.48 × 87,540.80
  4. Step 4: Simplify right side
    287,225.60x = 37,721,372,739.58
  5. Step 5: Solve for x
    x = 37,721,372,739.58/287,225.60
  6. Step 6: Final answer
    x = 131,330.12

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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.