Home / 287,445.95-396,839.83-190,780.89

Finding the Fourth Proportional to 287,445.95, 396,839.83 and 190,780.89

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Solution

The fourth proportional to 287,445.95, 396,839.83 and 190,780.89 is: 263,386.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,445.95 : 396,839.83 = 190,780.89 : x
  2. Step 2: Convert to fraction form
    287,445.95/396,839.83 = 190,780.89/x
  3. Step 3: Cross multiply
    287,445.95x = 396,839.83 × 190,780.89
  4. Step 4: Simplify right side
    287,445.95x = 75,709,455,954.85
  5. Step 5: Solve for x
    x = 75,709,455,954.85/287,445.95
  6. Step 6: Final answer
    x = 263,386.75

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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.