Finding the Fourth Proportional to 386,653,474.64, 533,593,513.32 and 210,454,211.09
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Solution
The fourth proportional to 386,653,474.64, 533,593,513.32 and 210,454,211.09 is: 290,433,189.55
Step by Step Solution
- Step 1: Write the proportion equation
386,653,474.64 : 533,593,513.32 = 210,454,211.09 : x - Step 2: Convert to fraction form
386,653,474.64/533,593,513.32 = 210,454,211.09/x - Step 3: Cross multiply
386,653,474.64x = 533,593,513.32 × 210,454,211.09 - Step 4: Simplify right side
386,653,474.64x = 112,297,001,888,502,000 - Step 5: Solve for x
x = 112,297,001,888,502,000/386,653,474.64 - Step 6: Final answer
x = 290,433,189.55
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1.5x scale
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.