Home / 285,730.56-428,599.08-108,189.36

Finding the Fourth Proportional to 285,730.56, 428,599.08 and 108,189.36

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Solution

The fourth proportional to 285,730.56, 428,599.08 and 108,189.36 is: 162,285.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,730.56 : 428,599.08 = 108,189.36 : x
  2. Step 2: Convert to fraction form
    285,730.56/428,599.08 = 108,189.36/x
  3. Step 3: Cross multiply
    285,730.56x = 428,599.08 × 108,189.36
  4. Step 4: Simplify right side
    285,730.56x = 46,369,860,161.79
  5. Step 5: Solve for x
    x = 46,369,860,161.79/285,730.56
  6. Step 6: Final answer
    x = 162,285.27

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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.