Home / 660,666.10-991,146.83-211,413.95

Finding the Fourth Proportional to 660,666.10, 991,146.83 and 211,413.95

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Solution

The fourth proportional to 660,666.10, 991,146.83 and 211,413.95 is: 317,168.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,666.10 : 991,146.83 = 211,413.95 : x
  2. Step 2: Convert to fraction form
    660,666.10/991,146.83 = 211,413.95/x
  3. Step 3: Cross multiply
    660,666.10x = 991,146.83 × 211,413.95
  4. Step 4: Simplify right side
    660,666.10x = 209,542,266,360.28
  5. Step 5: Solve for x
    x = 209,542,266,360.28/660,666.10
  6. Step 6: Final answer
    x = 317,168.18

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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.