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Finding the Fourth Proportional to 328,336.89, 492,505.43 and 79,018.89

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Solution

The fourth proportional to 328,336.89, 492,505.43 and 79,018.89 is: 118,528.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,336.89 : 492,505.43 = 79,018.89 : x
  2. Step 2: Convert to fraction form
    328,336.89/492,505.43 = 79,018.89/x
  3. Step 3: Cross multiply
    328,336.89x = 492,505.43 × 79,018.89
  4. Step 4: Simplify right side
    328,336.89x = 38,917,232,002.48
  5. Step 5: Solve for x
    x = 38,917,232,002.48/328,336.89
  6. Step 6: Final answer
    x = 118,528.36

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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.