Finding the Fourth Proportional to 216,487,387.08, 298,795,995.94 and 128,430,262.08
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Solution
The fourth proportional to 216,487,387.08, 298,795,995.94 and 128,430,262.08 is: 177,259,509.59
Step by Step Solution
- Step 1: Write the proportion equation
216,487,387.08 : 298,795,995.94 = 128,430,262.08 : x - Step 2: Convert to fraction form
216,487,387.08/298,795,995.94 = 128,430,262.08/x - Step 3: Cross multiply
216,487,387.08x = 298,795,995.94 × 128,430,262.08 - Step 4: Simplify right side
216,487,387.08x = 38,374,448,067,028,816 - Step 5: Solve for x
x = 38,374,448,067,028,816/216,487,387.08 - Step 6: Final answer
x = 177,259,509.59
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.