Finding the Fourth Proportional to 279,888,764.16, 386,264,269.44 and 156,129,189.12
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Solution
The fourth proportional to 279,888,764.16, 386,264,269.44 and 156,129,189.12 is: 215,468,196.28
Step by Step Solution
- Step 1: Write the proportion equation
279,888,764.16 : 386,264,269.44 = 156,129,189.12 : x - Step 2: Convert to fraction form
279,888,764.16/386,264,269.44 = 156,129,189.12/x - Step 3: Cross multiply
279,888,764.16x = 386,264,269.44 × 156,129,189.12 - Step 4: Simplify right side
279,888,764.16x = 60,307,127,173,696,400 - Step 5: Solve for x
x = 60,307,127,173,696,400/279,888,764.16 - Step 6: Final answer
x = 215,468,196.28
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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.