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Finding the Fourth Proportional to 194,485.60, 291,728.40 and 165,455.20

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Solution

The fourth proportional to 194,485.60, 291,728.40 and 165,455.20 is: 248,182.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,485.60 : 291,728.40 = 165,455.20 : x
  2. Step 2: Convert to fraction form
    194,485.60/291,728.40 = 165,455.20/x
  3. Step 3: Cross multiply
    194,485.60x = 291,728.40 × 165,455.20
  4. Step 4: Simplify right side
    194,485.60x = 48,267,980,767.68
  5. Step 5: Solve for x
    x = 48,267,980,767.68/194,485.60
  6. Step 6: Final answer
    x = 248,182.80

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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.