Home / 285,397.11-427,957.61-105,360.53

Finding the Fourth Proportional to 285,397.11, 427,957.61 and 105,360.53

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Solution

The fourth proportional to 285,397.11, 427,957.61 and 105,360.53 is: 157,989.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,397.11 : 427,957.61 = 105,360.53 : x
  2. Step 2: Convert to fraction form
    285,397.11/427,957.61 = 105,360.53/x
  3. Step 3: Cross multiply
    285,397.11x = 427,957.61 × 105,360.53
  4. Step 4: Simplify right side
    285,397.11x = 45,089,837,940.54
  5. Step 5: Solve for x
    x = 45,089,837,940.54/285,397.11
  6. Step 6: Final answer
    x = 157,989.82

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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.