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Finding the Fourth Proportional to 421,960.19, 632,872.04 and 155,846.03

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Solution

The fourth proportional to 421,960.19, 632,872.04 and 155,846.03 is: 233,743.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,960.19 : 632,872.04 = 155,846.03 : x
  2. Step 2: Convert to fraction form
    421,960.19/632,872.04 = 155,846.03/x
  3. Step 3: Cross multiply
    421,960.19x = 632,872.04 × 155,846.03
  4. Step 4: Simplify right side
    421,960.19x = 98,630,590,988.41
  5. Step 5: Solve for x
    x = 98,630,590,988.41/421,960.19
  6. Step 6: Final answer
    x = 233,743.83

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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.