Finding the Fourth Proportional to 256,134,683.84, 353,465,982.66 and 138,660,013.92
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Solution
The fourth proportional to 256,134,683.84, 353,465,982.66 and 138,660,013.92 is: 191,350,883.62
Step by Step Solution
- Step 1: Write the proportion equation
256,134,683.84 : 353,465,982.66 = 138,660,013.92 : x - Step 2: Convert to fraction form
256,134,683.84/353,465,982.66 = 138,660,013.92/x - Step 3: Cross multiply
256,134,683.84x = 353,465,982.66 × 138,660,013.92 - Step 4: Simplify right side
256,134,683.84x = 49,011,598,077,727,552 - Step 5: Solve for x
x = 49,011,598,077,727,552/256,134,683.84 - Step 6: Final answer
x = 191,350,883.62
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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.