Finding the Fourth Proportional to 288,142,268.52, 397,635,873.12 and 155,983,230.12
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Solution
The fourth proportional to 288,142,268.52, 397,635,873.12 and 155,983,230.12 is: 215,256,609.94
Step by Step Solution
- Step 1: Write the proportion equation
288,142,268.52 : 397,635,873.12 = 155,983,230.12 : x - Step 2: Convert to fraction form
288,142,268.52/397,635,873.12 = 155,983,230.12/x - Step 3: Cross multiply
288,142,268.52x = 397,635,873.12 × 155,983,230.12 - Step 4: Simplify right side
288,142,268.52x = 62,024,527,900,844,088 - Step 5: Solve for x
x = 62,024,527,900,844,088/288,142,268.52 - Step 6: Final answer
x = 215,256,609.94
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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.