Home / 272,629.49-409,027.65-139,603.89

Finding the Fourth Proportional to 272,629.49, 409,027.65 and 139,603.89

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Solution

The fourth proportional to 272,629.49, 409,027.65 and 139,603.89 is: 209,448.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,629.49 : 409,027.65 = 139,603.89 : x
  2. Step 2: Convert to fraction form
    272,629.49/409,027.65 = 139,603.89/x
  3. Step 3: Cross multiply
    272,629.49x = 409,027.65 × 139,603.89
  4. Step 4: Simplify right side
    272,629.49x = 57,101,851,057.56
  5. Step 5: Solve for x
    x = 57,101,851,057.56/272,629.49
  6. Step 6: Final answer
    x = 209,448.55

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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.