Finding the Fourth Proportional to 207,679,282.87, 286,685,656.14 and 129,401,511.15
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Solution
The fourth proportional to 207,679,282.87, 286,685,656.14 and 129,401,511.15 is: 178,629,069.86
Step by Step Solution
- Step 1: Write the proportion equation
207,679,282.87 : 286,685,656.14 = 129,401,511.15 : x - Step 2: Convert to fraction form
207,679,282.87/286,685,656.14 = 129,401,511.15/x - Step 3: Cross multiply
207,679,282.87x = 286,685,656.14 × 129,401,511.15 - Step 4: Simplify right side
207,679,282.87x = 37,097,557,128,400,712 - Step 5: Solve for x
x = 37,097,557,128,400,712/207,679,282.87 - Step 6: Final answer
x = 178,629,069.86
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.