Finding the Fourth Proportional to 256,130,532.28, 353,460,059.67 and 138,655,775.35
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Solution
The fourth proportional to 256,130,532.28, 353,460,059.67 and 138,655,775.35 is: 191,344,929.45
Step by Step Solution
- Step 1: Write the proportion equation
256,130,532.28 : 353,460,059.67 = 138,655,775.35 : x - Step 2: Convert to fraction form
256,130,532.28/353,460,059.67 = 138,655,775.35/x - Step 3: Cross multiply
256,130,532.28x = 353,460,059.67 × 138,655,775.35 - Step 4: Simplify right side
256,130,532.28x = 49,009,278,628,801,112 - Step 5: Solve for x
x = 49,009,278,628,801,112/256,130,532.28 - Step 6: Final answer
x = 191,344,929.45
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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.