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Finding the Fourth Proportional to 349,750.80, 524,842.20 and 139,366.80

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Solution

The fourth proportional to 349,750.80, 524,842.20 and 139,366.80 is: 209,136.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,750.80 : 524,842.20 = 139,366.80 : x
  2. Step 2: Convert to fraction form
    349,750.80/524,842.20 = 139,366.80/x
  3. Step 3: Cross multiply
    349,750.80x = 524,842.20 × 139,366.80
  4. Step 4: Simplify right side
    349,750.80x = 73,145,577,918.96
  5. Step 5: Solve for x
    x = 73,145,577,918.96/349,750.80
  6. Step 6: Final answer
    x = 209,136.27

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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.