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Finding the Fourth Proportional to 442,678.74, 664,024.04 and 139,063.01

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Solution

The fourth proportional to 442,678.74, 664,024.04 and 139,063.01 is: 208,596.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,678.74 : 664,024.04 = 139,063.01 : x
  2. Step 2: Convert to fraction form
    442,678.74/664,024.04 = 139,063.01/x
  3. Step 3: Cross multiply
    442,678.74x = 664,024.04 × 139,063.01
  4. Step 4: Simplify right side
    442,678.74x = 92,341,177,699.33
  5. Step 5: Solve for x
    x = 92,341,177,699.33/442,678.74
  6. Step 6: Final answer
    x = 208,596.37

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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.