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Finding the Fourth Proportional to 313,701.20, 469,860.60 and 188,824.40

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Solution

The fourth proportional to 313,701.20, 469,860.60 and 188,824.40 is: 282,820.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,701.20 : 469,860.60 = 188,824.40 : x
  2. Step 2: Convert to fraction form
    313,701.20/469,860.60 = 188,824.40/x
  3. Step 3: Cross multiply
    313,701.20x = 469,860.60 × 188,824.40
  4. Step 4: Simplify right side
    313,701.20x = 88,721,145,878.64
  5. Step 5: Solve for x
    x = 88,721,145,878.64/313,701.20
  6. Step 6: Final answer
    x = 282,820.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.