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Finding the Fourth Proportional to 256,651.18, 384,704.60 and 98,811.34

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Solution

The fourth proportional to 256,651.18, 384,704.60 and 98,811.34 is: 148,112.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,651.18 : 384,704.60 = 98,811.34 : x
  2. Step 2: Convert to fraction form
    256,651.18/384,704.60 = 98,811.34/x
  3. Step 3: Cross multiply
    256,651.18x = 384,704.60 × 98,811.34
  4. Step 4: Simplify right side
    256,651.18x = 38,013,177,030.16
  5. Step 5: Solve for x
    x = 38,013,177,030.16/256,651.18
  6. Step 6: Final answer
    x = 148,112.22

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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.