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Finding the Fourth Proportional to 296,970.60, 445,455.90 and 170,999.40

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Solution

The fourth proportional to 296,970.60, 445,455.90 and 170,999.40 is: 256,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,970.60 : 445,455.90 = 170,999.40 : x
  2. Step 2: Convert to fraction form
    296,970.60/445,455.90 = 170,999.40/x
  3. Step 3: Cross multiply
    296,970.60x = 445,455.90 × 170,999.40
  4. Step 4: Simplify right side
    296,970.60x = 76,172,691,626.46
  5. Step 5: Solve for x
    x = 76,172,691,626.46/296,970.60
  6. Step 6: Final answer
    x = 256,499.10

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Similar ratio
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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.