Home / 285,430.20-427,838.10-107,868.60

Finding the Fourth Proportional to 285,430.20, 427,838.10 and 107,868.60

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Solution

The fourth proportional to 285,430.20, 427,838.10 and 107,868.60 is: 161,686.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,430.20 : 427,838.10 = 107,868.60 : x
  2. Step 2: Convert to fraction form
    285,430.20/427,838.10 = 107,868.60/x
  3. Step 3: Cross multiply
    285,430.20x = 427,838.10 × 107,868.60
  4. Step 4: Simplify right side
    285,430.20x = 46,150,296,873.66
  5. Step 5: Solve for x
    x = 46,150,296,873.66/285,430.20
  6. Step 6: Final answer
    x = 161,686.80

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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.