Finding the Fourth Proportional to 217,038,220.20, 325,557,330.30 and 187,812,901.80
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Solution
The fourth proportional to 217,038,220.20, 325,557,330.30 and 187,812,901.80 is: 281,719,352.70
Step by Step Solution
- Step 1: Write the proportion equation
217,038,220.20 : 325,557,330.30 = 187,812,901.80 : x - Step 2: Convert to fraction form
217,038,220.20/325,557,330.30 = 187,812,901.80/x - Step 3: Cross multiply
217,038,220.20x = 325,557,330.30 × 187,812,901.80 - Step 4: Simplify right side
217,038,220.20x = 61,143,866,905,904,072 - Step 5: Solve for x
x = 61,143,866,905,904,072/217,038,220.20 - Step 6: Final answer
x = 281,719,352.70
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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.