Home / 281,155.22-388,003.86-153,830.78

Finding the Fourth Proportional to 281,155.22, 388,003.86 and 153,830.78

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Solution

The fourth proportional to 281,155.22, 388,003.86 and 153,830.78 is: 212,291.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,155.22 : 388,003.86 = 153,830.78 : x
  2. Step 2: Convert to fraction form
    281,155.22/388,003.86 = 153,830.78/x
  3. Step 3: Cross multiply
    281,155.22x = 388,003.86 × 153,830.78
  4. Step 4: Simplify right side
    281,155.22x = 59,686,934,486.79
  5. Step 5: Solve for x
    x = 59,686,934,486.79/281,155.22
  6. Step 6: Final answer
    x = 212,291.76

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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.