Home / 217,027.10-325,431.30-128,307.80

Finding the Fourth Proportional to 217,027.10, 325,431.30 and 128,307.80

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Solution

The fourth proportional to 217,027.10, 325,431.30 and 128,307.80 is: 192,397.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,027.10 : 325,431.30 = 128,307.80 : x
  2. Step 2: Convert to fraction form
    217,027.10/325,431.30 = 128,307.80/x
  3. Step 3: Cross multiply
    217,027.10x = 325,431.30 × 128,307.80
  4. Step 4: Simplify right side
    217,027.10x = 41,755,374,154.14
  5. Step 5: Solve for x
    x = 41,755,374,154.14/217,027.10
  6. Step 6: Final answer
    x = 192,397.05

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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.