Home / 323,619.40-485,429.10-217,865.80

Finding the Fourth Proportional to 323,619.40, 485,429.10 and 217,865.80

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Solution

The fourth proportional to 323,619.40, 485,429.10 and 217,865.80 is: 326,798.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,619.40 : 485,429.10 = 217,865.80 : x
  2. Step 2: Convert to fraction form
    323,619.40/485,429.10 = 217,865.80/x
  3. Step 3: Cross multiply
    323,619.40x = 485,429.10 × 217,865.80
  4. Step 4: Simplify right side
    323,619.40x = 105,758,399,214.78
  5. Step 5: Solve for x
    x = 105,758,399,214.78/323,619.40
  6. Step 6: Final answer
    x = 326,798.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.