Home / 219,163.30-302,495.72-128,548.46

Finding the Fourth Proportional to 219,163.30, 302,495.72 and 128,548.46

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Solution

The fourth proportional to 219,163.30, 302,495.72 and 128,548.46 is: 177,426.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,163.30 : 302,495.72 = 128,548.46 : x
  2. Step 2: Convert to fraction form
    219,163.30/302,495.72 = 128,548.46/x
  3. Step 3: Cross multiply
    219,163.30x = 302,495.72 × 128,548.46
  4. Step 4: Simplify right side
    219,163.30x = 38,885,359,076.09
  5. Step 5: Solve for x
    x = 38,885,359,076.09/219,163.30
  6. Step 6: Final answer
    x = 177,426.42

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1.5x scale

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.