Finding the Fourth Proportional to 243,605,946.83, 365,262,990.84 and 77,537,720.21
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Solution
The fourth proportional to 243,605,946.83, 365,262,990.84 and 77,537,720.21 is: 116,260,132.21
Step by Step Solution
- Step 1: Write the proportion equation
243,605,946.83 : 365,262,990.84 = 77,537,720.21 : x - Step 2: Convert to fraction form
243,605,946.83/365,262,990.84 = 77,537,720.21/x - Step 3: Cross multiply
243,605,946.83x = 365,262,990.84 × 77,537,720.21 - Step 4: Simplify right side
243,605,946.83x = 28,321,659,584,993,396 - Step 5: Solve for x
x = 28,321,659,584,993,396/243,605,946.83 - Step 6: Final answer
x = 116,260,132.21
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1.5x scale
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.