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Finding the Fourth Proportional to 296,898.36, 445,500.66 and 139,142.84

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Solution

The fourth proportional to 296,898.36, 445,500.66 and 139,142.84 is: 208,786.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,898.36 : 445,500.66 = 139,142.84 : x
  2. Step 2: Convert to fraction form
    296,898.36/445,500.66 = 139,142.84/x
  3. Step 3: Cross multiply
    296,898.36x = 445,500.66 × 139,142.84
  4. Step 4: Simplify right side
    296,898.36x = 61,988,227,054.27
  5. Step 5: Solve for x
    x = 61,988,227,054.27/296,898.36
  6. Step 6: Final answer
    x = 208,786.02

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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.