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Finding the Fourth Proportional to 296,745.85, 445,119.33 and 72,106.47

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Solution

The fourth proportional to 296,745.85, 445,119.33 and 72,106.47 is: 108,159.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,745.85 : 445,119.33 = 72,106.47 : x
  2. Step 2: Convert to fraction form
    296,745.85/445,119.33 = 72,106.47/x
  3. Step 3: Cross multiply
    296,745.85x = 445,119.33 × 72,106.47
  4. Step 4: Simplify right side
    296,745.85x = 32,095,983,615.07
  5. Step 5: Solve for x
    x = 32,095,983,615.07/296,745.85
  6. Step 6: Final answer
    x = 108,159.84

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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.