Home / 278,426,021.66-417,574,241.55-103,631,375.41

Finding the Fourth Proportional to 278,426,021.66, 417,574,241.55 and 103,631,375.41

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Solution

The fourth proportional to 278,426,021.66, 417,574,241.55 and 103,631,375.41 is: 155,422,947.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,426,021.66 : 417,574,241.55 = 103,631,375.41 : x
  2. Step 2: Convert to fraction form
    278,426,021.66/417,574,241.55 = 103,631,375.41/x
  3. Step 3: Cross multiply
    278,426,021.66x = 417,574,241.55 × 103,631,375.41
  4. Step 4: Simplify right side
    278,426,021.66x = 43,273,792,988,916,904
  5. Step 5: Solve for x
    x = 43,273,792,988,916,904/278,426,021.66
  6. Step 6: Final answer
    x = 155,422,947.65

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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.