Home / 236,389-326,217.61-128,961.30

Finding the Fourth Proportional to 236,389, 326,217.61 and 128,961.30

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Solution

The fourth proportional to 236,389, 326,217.61 and 128,961.30 is: 177,967.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,389 : 326,217.61 = 128,961.30 : x
  2. Step 2: Convert to fraction form
    236,389/326,217.61 = 128,961.30/x
  3. Step 3: Cross multiply
    236,389x = 326,217.61 × 128,961.30
  4. Step 4: Simplify right side
    236,389x = 42,069,447,068.49
  5. Step 5: Solve for x
    x = 42,069,447,068.49/236,389
  6. Step 6: Final answer
    x = 177,967.02

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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.