Home / 219,045.42-302,286.60-128,466.69

Finding the Fourth Proportional to 219,045.42, 302,286.60 and 128,466.69

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Solution

The fourth proportional to 219,045.42, 302,286.60 and 128,466.69 is: 177,286.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,045.42 : 302,286.60 = 128,466.69 : x
  2. Step 2: Convert to fraction form
    219,045.42/302,286.60 = 128,466.69/x
  3. Step 3: Cross multiply
    219,045.42x = 302,286.60 × 128,466.69
  4. Step 4: Simplify right side
    219,045.42x = 38,833,758,933.35
  5. Step 5: Solve for x
    x = 38,833,758,933.35/219,045.42
  6. Step 6: Final answer
    x = 177,286.33

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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.