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Finding the Fourth Proportional to 308,979.55, 433,193.45 and 308,979.55

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Solution

The fourth proportional to 308,979.55, 433,193.45 and 308,979.55 is: 433,193.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,979.55 : 433,193.45 = 308,979.55 : x
  2. Step 2: Convert to fraction form
    308,979.55/433,193.45 = 308,979.55/x
  3. Step 3: Cross multiply
    308,979.55x = 433,193.45 × 308,979.55
  4. Step 4: Simplify right side
    308,979.55x = 133,847,917,243.95
  5. Step 5: Solve for x
    x = 133,847,917,243.95/308,979.55
  6. Step 6: Final answer
    x = 433,193.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.