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Finding the Fourth Proportional to 326,783.80, 490,175.70 and 116,428.60

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Solution

The fourth proportional to 326,783.80, 490,175.70 and 116,428.60 is: 174,642.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,783.80 : 490,175.70 = 116,428.60 : x
  2. Step 2: Convert to fraction form
    326,783.80/490,175.70 = 116,428.60/x
  3. Step 3: Cross multiply
    326,783.80x = 490,175.70 × 116,428.60
  4. Step 4: Simplify right side
    326,783.80x = 57,070,470,505.02
  5. Step 5: Solve for x
    x = 57,070,470,505.02/326,783.80
  6. Step 6: Final answer
    x = 174,642.90

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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.