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Finding the Fourth Proportional to 308,999.10, 433,842.90 and 308,999.10

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Solution

The fourth proportional to 308,999.10, 433,842.90 and 308,999.10 is: 433,842.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,999.10 : 433,842.90 = 308,999.10 : x
  2. Step 2: Convert to fraction form
    308,999.10/433,842.90 = 308,999.10/x
  3. Step 3: Cross multiply
    308,999.10x = 433,842.90 × 308,999.10
  4. Step 4: Simplify right side
    308,999.10x = 134,057,065,641.39
  5. Step 5: Solve for x
    x = 134,057,065,641.39/308,999.10
  6. Step 6: Final answer
    x = 433,842.90

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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.