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Finding the Fourth Proportional to 272,441.28, 375,969.36 and 153,209.28

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Solution

The fourth proportional to 272,441.28, 375,969.36 and 153,209.28 is: 211,429.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,441.28 : 375,969.36 = 153,209.28 : x
  2. Step 2: Convert to fraction form
    272,441.28/375,969.36 = 153,209.28/x
  3. Step 3: Cross multiply
    272,441.28x = 375,969.36 × 153,209.28
  4. Step 4: Simplify right side
    272,441.28x = 57,601,994,947.66
  5. Step 5: Solve for x
    x = 57,601,994,947.66/272,441.28
  6. Step 6: Final answer
    x = 211,429.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.