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Finding the Fourth Proportional to 353,190.40, 530,822.40 and 307,571.20

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Solution

The fourth proportional to 353,190.40, 530,822.40 and 307,571.20 is: 462,259.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,190.40 : 530,822.40 = 307,571.20 : x
  2. Step 2: Convert to fraction form
    353,190.40/530,822.40 = 307,571.20/x
  3. Step 3: Cross multiply
    353,190.40x = 530,822.40 × 307,571.20
  4. Step 4: Simplify right side
    353,190.40x = 163,265,682,554.88
  5. Step 5: Solve for x
    x = 163,265,682,554.88/353,190.40
  6. Step 6: Final answer
    x = 462,259.68

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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.