Finding the Fourth Proportional to 279,521,741.80, 419,282,612.70 and 85,432,781.80
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Solution
The fourth proportional to 279,521,741.80, 419,282,612.70 and 85,432,781.80 is: 128,149,172.70
Step by Step Solution
- Step 1: Write the proportion equation
279,521,741.80 : 419,282,612.70 = 85,432,781.80 : x - Step 2: Convert to fraction form
279,521,741.80/419,282,612.70 = 85,432,781.80/x - Step 3: Cross multiply
279,521,741.80x = 419,282,612.70 × 85,432,781.80 - Step 4: Simplify right side
279,521,741.80x = 35,820,479,963,333,008 - Step 5: Solve for x
x = 35,820,479,963,333,008/279,521,741.80 - Step 6: Final answer
x = 128,149,172.70
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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.