Home / 421,298.55-631,982.62-136,982.64

Finding the Fourth Proportional to 421,298.55, 631,982.62 and 136,982.64

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Solution

The fourth proportional to 421,298.55, 631,982.62 and 136,982.64 is: 205,485.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,298.55 : 631,982.62 = 136,982.64 : x
  2. Step 2: Convert to fraction form
    421,298.55/631,982.62 = 136,982.64/x
  3. Step 3: Cross multiply
    421,298.55x = 631,982.62 × 136,982.64
  4. Step 4: Simplify right side
    421,298.55x = 86,570,650,262.88
  5. Step 5: Solve for x
    x = 86,570,650,262.88/421,298.55
  6. Step 6: Final answer
    x = 205,485.28

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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.