Home / 230,189.28-317,638.50-128,211.32

Finding the Fourth Proportional to 230,189.28, 317,638.50 and 128,211.32

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Solution

The fourth proportional to 230,189.28, 317,638.50 and 128,211.32 is: 176,918.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,189.28 : 317,638.50 = 128,211.32 : x
  2. Step 2: Convert to fraction form
    230,189.28/317,638.50 = 128,211.32/x
  3. Step 3: Cross multiply
    230,189.28x = 317,638.50 × 128,211.32
  4. Step 4: Simplify right side
    230,189.28x = 40,724,851,367.82
  5. Step 5: Solve for x
    x = 40,724,851,367.82/230,189.28
  6. Step 6: Final answer
    x = 176,918.97

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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.