Home / 217,021.60-325,423.05-128,302.30

Finding the Fourth Proportional to 217,021.60, 325,423.05 and 128,302.30

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Solution

The fourth proportional to 217,021.60, 325,423.05 and 128,302.30 is: 192,388.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,021.60 : 325,423.05 = 128,302.30 : x
  2. Step 2: Convert to fraction form
    217,021.60/325,423.05 = 128,302.30/x
  3. Step 3: Cross multiply
    217,021.60x = 325,423.05 × 128,302.30
  4. Step 4: Simplify right side
    217,021.60x = 41,752,525,788.02
  5. Step 5: Solve for x
    x = 41,752,525,788.02/217,021.60
  6. Step 6: Final answer
    x = 192,388.80

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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.