Finding the Fourth Proportional to 288,586,422.74, 398,238,590.12 and 156,424,581.68
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Solution
The fourth proportional to 288,586,422.74, 398,238,590.12 and 156,424,581.68 is: 215,860,137.41
Step by Step Solution
- Step 1: Write the proportion equation
288,586,422.74 : 398,238,590.12 = 156,424,581.68 : x - Step 2: Convert to fraction form
288,586,422.74/398,238,590.12 = 156,424,581.68/x - Step 3: Cross multiply
288,586,422.74x = 398,238,590.12 × 156,424,581.68 - Step 4: Simplify right side
288,586,422.74x = 62,294,304,865,580,672 - Step 5: Solve for x
x = 62,294,304,865,580,672/288,586,422.74 - Step 6: Final answer
x = 215,860,137.41
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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.