Home / 219,023.82-302,266.98-128,346.75

Finding the Fourth Proportional to 219,023.82, 302,266.98 and 128,346.75

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Solution

The fourth proportional to 219,023.82, 302,266.98 and 128,346.75 is: 177,126.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,023.82 : 302,266.98 = 128,346.75 : x
  2. Step 2: Convert to fraction form
    219,023.82/302,266.98 = 128,346.75/x
  3. Step 3: Cross multiply
    219,023.82x = 302,266.98 × 128,346.75
  4. Step 4: Simplify right side
    219,023.82x = 38,794,984,515.32
  5. Step 5: Solve for x
    x = 38,794,984,515.32/219,023.82
  6. Step 6: Final answer
    x = 177,126.78

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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.