Finding the Fourth Proportional to 256,244,702.48, 353,615,928.62 and 138,767,344.38
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Solution
The fourth proportional to 256,244,702.48, 353,615,928.62 and 138,767,344.38 is: 191,497,981.70
Step by Step Solution
- Step 1: Write the proportion equation
256,244,702.48 : 353,615,928.62 = 138,767,344.38 : x - Step 2: Convert to fraction form
256,244,702.48/353,615,928.62 = 138,767,344.38/x - Step 3: Cross multiply
256,244,702.48x = 353,615,928.62 × 138,767,344.38 - Step 4: Simplify right side
256,244,702.48x = 49,070,343,344,371,200 - Step 5: Solve for x
x = 49,070,343,344,371,200/256,244,702.48 - Step 6: Final answer
x = 191,497,981.70
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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.