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Finding the Fourth Proportional to 296,496.40, 445,619.40 and 258,005.20

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Solution

The fourth proportional to 296,496.40, 445,619.40 and 258,005.20 is: 387,769.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,496.40 : 445,619.40 = 258,005.20 : x
  2. Step 2: Convert to fraction form
    296,496.40/445,619.40 = 258,005.20/x
  3. Step 3: Cross multiply
    296,496.40x = 445,619.40 × 258,005.20
  4. Step 4: Simplify right side
    296,496.40x = 114,972,122,420.88
  5. Step 5: Solve for x
    x = 114,972,122,420.88/296,496.40
  6. Step 6: Final answer
    x = 387,769.03

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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.