Finding the Fourth Proportional to 256,130,576.28, 353,460,120.48 and 138,655,819.44
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Solution
The fourth proportional to 256,130,576.28, 353,460,120.48 and 138,655,819.44 is: 191,344,990.34
Step by Step Solution
- Step 1: Write the proportion equation
256,130,576.28 : 353,460,120.48 = 138,655,819.44 : x - Step 2: Convert to fraction form
256,130,576.28/353,460,120.48 = 138,655,819.44/x - Step 3: Cross multiply
256,130,576.28x = 353,460,120.48 × 138,655,819.44 - Step 4: Simplify right side
256,130,576.28x = 49,009,302,644,515,528 - Step 5: Solve for x
x = 49,009,302,644,515,528/256,130,576.28 - Step 6: Final answer
x = 191,344,990.34
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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.