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Finding the Fourth Proportional to 328,612.26, 492,918.43 and 79,294.26

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Solution

The fourth proportional to 328,612.26, 492,918.43 and 79,294.26 is: 118,941.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,612.26 : 492,918.43 = 79,294.26 : x
  2. Step 2: Convert to fraction form
    328,612.26/492,918.43 = 79,294.26/x
  3. Step 3: Cross multiply
    328,612.26x = 492,918.43 × 79,294.26
  4. Step 4: Simplify right side
    328,612.26x = 39,085,602,147.21
  5. Step 5: Solve for x
    x = 39,085,602,147.21/328,612.26
  6. Step 6: Final answer
    x = 118,941.40

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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.