Home / 281,308.18-388,205.41-153,984.50

Finding the Fourth Proportional to 281,308.18, 388,205.41 and 153,984.50

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Solution

The fourth proportional to 281,308.18, 388,205.41 and 153,984.50 is: 212,498.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,308.18 : 388,205.41 = 153,984.50 : x
  2. Step 2: Convert to fraction form
    281,308.18/388,205.41 = 153,984.50/x
  3. Step 3: Cross multiply
    281,308.18x = 388,205.41 × 153,984.50
  4. Step 4: Simplify right side
    281,308.18x = 59,777,615,956.15
  5. Step 5: Solve for x
    x = 59,777,615,956.15/281,308.18
  6. Step 6: Final answer
    x = 212,498.68

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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.