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Finding the Fourth Proportional to 197,356.87, 295,990.65 and 90,638.23

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Solution

The fourth proportional to 197,356.87, 295,990.65 and 90,638.23 is: 135,936.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,356.87 : 295,990.65 = 90,638.23 : x
  2. Step 2: Convert to fraction form
    197,356.87/295,990.65 = 90,638.23/x
  3. Step 3: Cross multiply
    197,356.87x = 295,990.65 × 90,638.23
  4. Step 4: Simplify right side
    197,356.87x = 26,828,068,612.55
  5. Step 5: Solve for x
    x = 26,828,068,612.55/197,356.87
  6. Step 6: Final answer
    x = 135,936.84

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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.