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Finding the Fourth Proportional to 219,215.30, 302,525.55 and 123,719.94

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Solution

The fourth proportional to 219,215.30, 302,525.55 and 123,719.94 is: 170,738.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,215.30 : 302,525.55 = 123,719.94 : x
  2. Step 2: Convert to fraction form
    219,215.30/302,525.55 = 123,719.94/x
  3. Step 3: Cross multiply
    219,215.30x = 302,525.55 × 123,719.94
  4. Step 4: Simplify right side
    219,215.30x = 37,428,442,894.47
  5. Step 5: Solve for x
    x = 37,428,442,894.47/219,215.30
  6. Step 6: Final answer
    x = 170,738.28

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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.