Finding the Fourth Proportional to 257,517,235.80, 386,275,853.70 and 121,468,339.80
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Solution
The fourth proportional to 257,517,235.80, 386,275,853.70 and 121,468,339.80 is: 182,202,509.70
Step by Step Solution
- Step 1: Write the proportion equation
257,517,235.80 : 386,275,853.70 = 121,468,339.80 : x - Step 2: Convert to fraction form
257,517,235.80/386,275,853.70 = 121,468,339.80/x - Step 3: Cross multiply
257,517,235.80x = 386,275,853.70 × 121,468,339.80 - Step 4: Simplify right side
257,517,235.80x = 46,920,286,653,766,688 - Step 5: Solve for x
x = 46,920,286,653,766,688/257,517,235.80 - Step 6: Final answer
x = 182,202,509.70
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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.