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Finding the Fourth Proportional to 197,215.40, 295,482.90 and 91,818.20

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Solution

The fourth proportional to 197,215.40, 295,482.90 and 91,818.20 is: 137,568.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,215.40 : 295,482.90 = 91,818.20 : x
  2. Step 2: Convert to fraction form
    197,215.40/295,482.90 = 91,818.20/x
  3. Step 3: Cross multiply
    197,215.40x = 295,482.90 × 91,818.20
  4. Step 4: Simplify right side
    197,215.40x = 27,130,708,008.78
  5. Step 5: Solve for x
    x = 27,130,708,008.78/197,215.40
  6. Step 6: Final answer
    x = 137,568.91

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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.