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Finding the Fourth Proportional to 296,803.76, 445,351.80 and 139,004.96

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Solution

The fourth proportional to 296,803.76, 445,351.80 and 139,004.96 is: 208,575.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,803.76 : 445,351.80 = 139,004.96 : x
  2. Step 2: Convert to fraction form
    296,803.76/445,351.80 = 139,004.96/x
  3. Step 3: Cross multiply
    296,803.76x = 445,351.80 × 139,004.96
  4. Step 4: Simplify right side
    296,803.76x = 61,906,109,144.93
  5. Step 5: Solve for x
    x = 61,906,109,144.93/296,803.76
  6. Step 6: Final answer
    x = 208,575.89

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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.