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Finding the Fourth Proportional to 660,352.37, 990,480.11 and 210,952.58

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Solution

The fourth proportional to 660,352.37, 990,480.11 and 210,952.58 is: 316,413.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,352.37 : 990,480.11 = 210,952.58 : x
  2. Step 2: Convert to fraction form
    660,352.37/990,480.11 = 210,952.58/x
  3. Step 3: Cross multiply
    660,352.37x = 990,480.11 × 210,952.58
  4. Step 4: Simplify right side
    660,352.37x = 208,944,334,643.18
  5. Step 5: Solve for x
    x = 208,944,334,643.18/660,352.37
  6. Step 6: Final answer
    x = 316,413.39

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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.