Finding the Fourth Proportional to 315,474,985.20, 473,212,477.80 and 261,727,273.20
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Solution
The fourth proportional to 315,474,985.20, 473,212,477.80 and 261,727,273.20 is: 392,590,909.80
Step by Step Solution
- Step 1: Write the proportion equation
315,474,985.20 : 473,212,477.80 = 261,727,273.20 : x - Step 2: Convert to fraction form
315,474,985.20/473,212,477.80 = 261,727,273.20/x - Step 3: Cross multiply
315,474,985.20x = 473,212,477.80 × 261,727,273.20 - Step 4: Simplify right side
315,474,985.20x = 123,852,611,458,809,536 - Step 5: Solve for x
x = 123,852,611,458,809,536/315,474,985.20 - Step 6: Final answer
x = 392,590,909.80
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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.