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Finding the Fourth Proportional to 421,589.04, 632,632.72 and 155,536.44

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Solution

The fourth proportional to 421,589.04, 632,632.72 and 155,536.44 is: 233,396.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,589.04 : 632,632.72 = 155,536.44 : x
  2. Step 2: Convert to fraction form
    421,589.04/632,632.72 = 155,536.44/x
  3. Step 3: Cross multiply
    421,589.04x = 632,632.72 × 155,536.44
  4. Step 4: Simplify right side
    421,589.04x = 98,397,441,096.32
  5. Step 5: Solve for x
    x = 98,397,441,096.32/421,589.04
  6. Step 6: Final answer
    x = 233,396.58

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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.