Finding the Fourth Proportional to 259,927,121.07, 389,808,365.36 and 85,009,740.03
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Solution
The fourth proportional to 259,927,121.07, 389,808,365.36 and 85,009,740.03 is: 127,487,688.33
Step by Step Solution
- Step 1: Write the proportion equation
259,927,121.07 : 389,808,365.36 = 85,009,740.03 : x - Step 2: Convert to fraction form
259,927,121.07/389,808,365.36 = 85,009,740.03/x - Step 3: Cross multiply
259,927,121.07x = 389,808,365.36 × 85,009,740.03 - Step 4: Simplify right side
259,927,121.07x = 33,137,507,800,347,812 - Step 5: Solve for x
x = 33,137,507,800,347,812/259,927,121.07 - Step 6: Final answer
x = 127,487,688.33
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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.