Home / 421,002.82-631,355.55-121,402.54

Finding the Fourth Proportional to 421,002.82, 631,355.55 and 121,402.54

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Solution

The fourth proportional to 421,002.82, 631,355.55 and 121,402.54 is: 182,060.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,002.82 : 631,355.55 = 121,402.54 : x
  2. Step 2: Convert to fraction form
    421,002.82/631,355.55 = 121,402.54/x
  3. Step 3: Cross multiply
    421,002.82x = 631,355.55 × 121,402.54
  4. Step 4: Simplify right side
    421,002.82x = 76,648,167,413.10
  5. Step 5: Solve for x
    x = 76,648,167,413.10/421,002.82
  6. Step 6: Final answer
    x = 182,060.94

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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.