Home / 354,736.28-531,642.36-144,128

Finding the Fourth Proportional to 354,736.28, 531,642.36 and 144,128

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Solution

The fourth proportional to 354,736.28, 531,642.36 and 144,128 is: 216,004.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,736.28 : 531,642.36 = 144,128 : x
  2. Step 2: Convert to fraction form
    354,736.28/531,642.36 = 144,128/x
  3. Step 3: Cross multiply
    354,736.28x = 531,642.36 × 144,128
  4. Step 4: Simplify right side
    354,736.28x = 76,624,550,062.08
  5. Step 5: Solve for x
    x = 76,624,550,062.08/354,736.28
  6. Step 6: Final answer
    x = 216,004.27

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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.