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Finding the Fourth Proportional to 219,290.76, 302,628.56 and 134,391.40

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Solution

The fourth proportional to 219,290.76, 302,628.56 and 134,391.40 is: 185,464.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,290.76 : 302,628.56 = 134,391.40 : x
  2. Step 2: Convert to fraction form
    219,290.76/302,628.56 = 134,391.40/x
  3. Step 3: Cross multiply
    219,290.76x = 302,628.56 × 134,391.40
  4. Step 4: Simplify right side
    219,290.76x = 40,670,675,858.38
  5. Step 5: Solve for x
    x = 40,670,675,858.38/219,290.76
  6. Step 6: Final answer
    x = 185,464.61

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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.