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Finding the Fourth Proportional to 285,370.84, 428,023.86 and 75,025.18

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Solution

The fourth proportional to 285,370.84, 428,023.86 and 75,025.18 is: 112,529.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,370.84 : 428,023.86 = 75,025.18 : x
  2. Step 2: Convert to fraction form
    285,370.84/428,023.86 = 75,025.18/x
  3. Step 3: Cross multiply
    285,370.84x = 428,023.86 × 75,025.18
  4. Step 4: Simplify right side
    285,370.84x = 32,112,567,140.79
  5. Step 5: Solve for x
    x = 32,112,567,140.79/285,370.84
  6. Step 6: Final answer
    x = 112,529.25

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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.