Finding the Fourth Proportional to 374,112,823.80, 561,169,235.70 and 212,869,687.80
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Solution
The fourth proportional to 374,112,823.80, 561,169,235.70 and 212,869,687.80 is: 319,304,531.70
Step by Step Solution
- Step 1: Write the proportion equation
374,112,823.80 : 561,169,235.70 = 212,869,687.80 : x - Step 2: Convert to fraction form
374,112,823.80/561,169,235.70 = 212,869,687.80/x - Step 3: Cross multiply
374,112,823.80x = 561,169,235.70 × 212,869,687.80 - Step 4: Simplify right side
374,112,823.80x = 119,455,920,006,423,632 - Step 5: Solve for x
x = 119,455,920,006,423,632/374,112,823.80 - Step 6: Final answer
x = 319,304,531.70
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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.