Finding the Fourth Proportional to 199,631,999.20, 299,447,998.80 and 48,342,143.20
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Solution
The fourth proportional to 199,631,999.20, 299,447,998.80 and 48,342,143.20 is: 72,513,214.80
Step by Step Solution
- Step 1: Write the proportion equation
199,631,999.20 : 299,447,998.80 = 48,342,143.20 : x - Step 2: Convert to fraction form
199,631,999.20/299,447,998.80 = 48,342,143.20/x - Step 3: Cross multiply
199,631,999.20x = 299,447,998.80 × 48,342,143.20 - Step 4: Simplify right side
199,631,999.20x = 14,475,958,038,943,030 - Step 5: Solve for x
x = 14,475,958,038,943,030/199,631,999.20 - Step 6: Final answer
x = 72,513,214.80
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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.