Home / 219,048.42-302,290.74-128,469.69

Finding the Fourth Proportional to 219,048.42, 302,290.74 and 128,469.69

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Solution

The fourth proportional to 219,048.42, 302,290.74 and 128,469.69 is: 177,290.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,048.42 : 302,290.74 = 128,469.69 : x
  2. Step 2: Convert to fraction form
    219,048.42/302,290.74 = 128,469.69/x
  3. Step 3: Cross multiply
    219,048.42x = 302,290.74 × 128,469.69
  4. Step 4: Simplify right side
    219,048.42x = 38,835,197,657.67
  5. Step 5: Solve for x
    x = 38,835,197,657.67/219,048.42
  6. Step 6: Final answer
    x = 177,290.47

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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.