Home / 219,519.18-302,942.16-122,720.27

Finding the Fourth Proportional to 219,519.18, 302,942.16 and 122,720.27

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Solution

The fourth proportional to 219,519.18, 302,942.16 and 122,720.27 is: 169,357.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,519.18 : 302,942.16 = 122,720.27 : x
  2. Step 2: Convert to fraction form
    219,519.18/302,942.16 = 122,720.27/x
  3. Step 3: Cross multiply
    219,519.18x = 302,942.16 × 122,720.27
  4. Step 4: Simplify right side
    219,519.18x = 37,177,142,154.87
  5. Step 5: Solve for x
    x = 37,177,142,154.87/219,519.18
  6. Step 6: Final answer
    x = 169,357.15

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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.