Finding the Fourth Proportional to 280,079,070.57, 386,543,009.88 and 159,406,397.99
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Solution
The fourth proportional to 280,079,070.57, 386,543,009.88 and 159,406,397.99 is: 220,000,119.06
Step by Step Solution
- Step 1: Write the proportion equation
280,079,070.57 : 386,543,009.88 = 159,406,397.99 : x - Step 2: Convert to fraction form
280,079,070.57/386,543,009.88 = 159,406,397.99/x - Step 3: Cross multiply
280,079,070.57x = 386,543,009.88 × 159,406,397.99 - Step 4: Simplify right side
280,079,070.57x = 61,617,428,870,852,560 - Step 5: Solve for x
x = 61,617,428,870,852,560/280,079,070.57 - Step 6: Final answer
x = 220,000,119.06
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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.