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Finding the Fourth Proportional to 421,803.06, 632,784.78 and 155,584.41

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Solution

The fourth proportional to 421,803.06, 632,784.78 and 155,584.41 is: 233,406.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,803.06 : 632,784.78 = 155,584.41 : x
  2. Step 2: Convert to fraction form
    421,803.06/632,784.78 = 155,584.41/x
  3. Step 3: Cross multiply
    421,803.06x = 632,784.78 × 155,584.41
  4. Step 4: Simplify right side
    421,803.06x = 98,451,446,653.28
  5. Step 5: Solve for x
    x = 98,451,446,653.28/421,803.06
  6. Step 6: Final answer
    x = 233,406.19

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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.