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Finding the Fourth Proportional to 421,849.34, 632,643.62 and 122,351.96

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Solution

The fourth proportional to 421,849.34, 632,643.62 and 122,351.96 is: 183,490.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,849.34 : 632,643.62 = 122,351.96 : x
  2. Step 2: Convert to fraction form
    421,849.34/632,643.62 = 122,351.96/x
  3. Step 3: Cross multiply
    421,849.34x = 632,643.62 × 122,351.96
  4. Step 4: Simplify right side
    421,849.34x = 77,405,186,888.50
  5. Step 5: Solve for x
    x = 77,405,186,888.50/421,849.34
  6. Step 6: Final answer
    x = 183,490.12

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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.