Home / 230,388.15-317,897.12-128,391.26

Finding the Fourth Proportional to 230,388.15, 317,897.12 and 128,391.26

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Solution

The fourth proportional to 230,388.15, 317,897.12 and 128,391.26 is: 177,158.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,388.15 : 317,897.12 = 128,391.26 : x
  2. Step 2: Convert to fraction form
    230,388.15/317,897.12 = 128,391.26/x
  3. Step 3: Cross multiply
    230,388.15x = 317,897.12 × 128,391.26
  4. Step 4: Simplify right side
    230,388.15x = 40,815,209,555.73
  5. Step 5: Solve for x
    x = 40,815,209,555.73/230,388.15
  6. Step 6: Final answer
    x = 177,158.46

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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.