Home / 287,018.78-396,140.74-190,051.70

Finding the Fourth Proportional to 287,018.78, 396,140.74 and 190,051.70

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Solution

The fourth proportional to 287,018.78, 396,140.74 and 190,051.70 is: 262,307.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,018.78 : 396,140.74 = 190,051.70 : x
  2. Step 2: Convert to fraction form
    287,018.78/396,140.74 = 190,051.70/x
  3. Step 3: Cross multiply
    287,018.78x = 396,140.74 × 190,051.70
  4. Step 4: Simplify right side
    287,018.78x = 75,287,218,620.43
  5. Step 5: Solve for x
    x = 75,287,218,620.43/287,018.78
  6. Step 6: Final answer
    x = 262,307.64

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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.