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Finding the Fourth Proportional to 296,798.76, 445,344.30 and 138,999.96

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Solution

The fourth proportional to 296,798.76, 445,344.30 and 138,999.96 is: 208,568.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,798.76 : 445,344.30 = 138,999.96 : x
  2. Step 2: Convert to fraction form
    296,798.76/445,344.30 = 138,999.96/x
  3. Step 3: Cross multiply
    296,798.76x = 445,344.30 × 138,999.96
  4. Step 4: Simplify right side
    296,798.76x = 61,902,839,886.23
  5. Step 5: Solve for x
    x = 61,902,839,886.23/296,798.76
  6. Step 6: Final answer
    x = 208,568.39

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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.