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Finding the Fourth Proportional to 309,283.05, 426,821.12 and 295,111.29

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Solution

The fourth proportional to 309,283.05, 426,821.12 and 295,111.29 is: 407,263.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,283.05 : 426,821.12 = 295,111.29 : x
  2. Step 2: Convert to fraction form
    309,283.05/426,821.12 = 295,111.29/x
  3. Step 3: Cross multiply
    309,283.05x = 426,821.12 × 295,111.29
  4. Step 4: Simplify right side
    309,283.05x = 125,959,729,846.89
  5. Step 5: Solve for x
    x = 125,959,729,846.89/309,283.05
  6. Step 6: Final answer
    x = 407,263.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.