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Finding the Fourth Proportional to 442,670.40, 663,940.80 and 127,094.40

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Solution

The fourth proportional to 442,670.40, 663,940.80 and 127,094.40 is: 190,623.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,670.40 : 663,940.80 = 127,094.40 : x
  2. Step 2: Convert to fraction form
    442,670.40/663,940.80 = 127,094.40/x
  3. Step 3: Cross multiply
    442,670.40x = 663,940.80 × 127,094.40
  4. Step 4: Simplify right side
    442,670.40x = 84,383,157,611.52
  5. Step 5: Solve for x
    x = 84,383,157,611.52/442,670.40
  6. Step 6: Final answer
    x = 190,623.00

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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.