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Finding the Fourth Proportional to 328,842.60, 492,729.30 and 297,349.80

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Solution

The fourth proportional to 328,842.60, 492,729.30 and 297,349.80 is: 445,541.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,842.60 : 492,729.30 = 297,349.80 : x
  2. Step 2: Convert to fraction form
    328,842.60/492,729.30 = 297,349.80/x
  3. Step 3: Cross multiply
    328,842.60x = 492,729.30 × 297,349.80
  4. Step 4: Simplify right side
    328,842.60x = 146,512,958,809.14
  5. Step 5: Solve for x
    x = 146,512,958,809.14/328,842.60
  6. Step 6: Final answer
    x = 445,541.30

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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.