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Finding the Fourth Proportional to 193,602.80, 290,015.40 and 130,617.20

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Solution

The fourth proportional to 193,602.80, 290,015.40 and 130,617.20 is: 195,663.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,602.80 : 290,015.40 = 130,617.20 : x
  2. Step 2: Convert to fraction form
    193,602.80/290,015.40 = 130,617.20/x
  3. Step 3: Cross multiply
    193,602.80x = 290,015.40 × 130,617.20
  4. Step 4: Simplify right side
    193,602.80x = 37,880,999,504.88
  5. Step 5: Solve for x
    x = 37,880,999,504.88/193,602.80
  6. Step 6: Final answer
    x = 195,663.49

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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.