Finding the Fourth Proportional to 431,177,427.60, 646,860,619.80 and 139,994,998.80
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Solution
The fourth proportional to 431,177,427.60, 646,860,619.80 and 139,994,998.80 is: 210,023,173.52
Step by Step Solution
- Step 1: Write the proportion equation
431,177,427.60 : 646,860,619.80 = 139,994,998.80 : x - Step 2: Convert to fraction form
431,177,427.60/646,860,619.80 = 139,994,998.80/x - Step 3: Cross multiply
431,177,427.60x = 646,860,619.80 × 139,994,998.80 - Step 4: Simplify right side
431,177,427.60x = 90,557,251,692,668,256 - Step 5: Solve for x
x = 90,557,251,692,668,256/431,177,427.60 - Step 6: Final answer
x = 210,023,173.52
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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.