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Finding the Fourth Proportional to 407,999.97, 612,103.77 and 239,662.67

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Solution

The fourth proportional to 407,999.97, 612,103.77 and 239,662.67 is: 359,554.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,999.97 : 612,103.77 = 239,662.67 : x
  2. Step 2: Convert to fraction form
    407,999.97/612,103.77 = 239,662.67/x
  3. Step 3: Cross multiply
    407,999.97x = 612,103.77 × 239,662.67
  4. Step 4: Simplify right side
    407,999.97x = 146,698,420,774.75
  5. Step 5: Solve for x
    x = 146,698,420,774.75/407,999.97
  6. Step 6: Final answer
    x = 359,554.98

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1.5x scale

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.