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Finding the Fourth Proportional to 660,352.50, 990,531.18 and 161,716.50

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Solution

The fourth proportional to 660,352.50, 990,531.18 and 161,716.50 is: 242,575.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,352.50 : 990,531.18 = 161,716.50 : x
  2. Step 2: Convert to fraction form
    660,352.50/990,531.18 = 161,716.50/x
  3. Step 3: Cross multiply
    660,352.50x = 990,531.18 × 161,716.50
  4. Step 4: Simplify right side
    660,352.50x = 160,185,235,570.47
  5. Step 5: Solve for x
    x = 160,185,235,570.47/660,352.50
  6. Step 6: Final answer
    x = 242,575.35

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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.