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Finding the Fourth Proportional to 197,312.40, 295,628.40 and 91,915.20

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Solution

The fourth proportional to 197,312.40, 295,628.40 and 91,915.20 is: 137,714.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,312.40 : 295,628.40 = 91,915.20 : x
  2. Step 2: Convert to fraction form
    197,312.40/295,628.40 = 91,915.20/x
  3. Step 3: Cross multiply
    197,312.40x = 295,628.40 × 91,915.20
  4. Step 4: Simplify right side
    197,312.40x = 27,172,743,511.68
  5. Step 5: Solve for x
    x = 27,172,743,511.68/197,312.40
  6. Step 6: Final answer
    x = 137,714.32

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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.