Home / 420,727.98-631,321.60-243,580.98

Finding the Fourth Proportional to 420,727.98, 631,321.60 and 243,580.98

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Solution

The fourth proportional to 420,727.98, 631,321.60 and 243,580.98 is: 365,504.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,727.98 : 631,321.60 = 243,580.98 : x
  2. Step 2: Convert to fraction form
    420,727.98/631,321.60 = 243,580.98/x
  3. Step 3: Cross multiply
    420,727.98x = 631,321.60 × 243,580.98
  4. Step 4: Simplify right side
    420,727.98x = 153,777,934,023.17
  5. Step 5: Solve for x
    x = 153,777,934,023.17/420,727.98
  6. Step 6: Final answer
    x = 365,504.41

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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.