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Finding the Fourth Proportional to 340,448.63, 469,661.36 and 219,628.85

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Solution

The fourth proportional to 340,448.63, 469,661.36 and 219,628.85 is: 302,986.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,448.63 : 469,661.36 = 219,628.85 : x
  2. Step 2: Convert to fraction form
    340,448.63/469,661.36 = 219,628.85/x
  3. Step 3: Cross multiply
    340,448.63x = 469,661.36 × 219,628.85
  4. Step 4: Simplify right side
    340,448.63x = 103,151,180,939.79
  5. Step 5: Solve for x
    x = 103,151,180,939.79/340,448.63
  6. Step 6: Final answer
    x = 302,986.04

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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.