Home / 423,055.20-634,579.62-138,942.95

Finding the Fourth Proportional to 423,055.20, 634,579.62 and 138,942.95

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Solution

The fourth proportional to 423,055.20, 634,579.62 and 138,942.95 is: 208,413.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,055.20 : 634,579.62 = 138,942.95 : x
  2. Step 2: Convert to fraction form
    423,055.20/634,579.62 = 138,942.95/x
  3. Step 3: Cross multiply
    423,055.20x = 634,579.62 × 138,942.95
  4. Step 4: Simplify right side
    423,055.20x = 88,170,360,718.74
  5. Step 5: Solve for x
    x = 88,170,360,718.74/423,055.20
  6. Step 6: Final answer
    x = 208,413.37

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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.