Finding the Fourth Proportional to 223,028,736.95, 307,761,612.80 and 128,948,920.00
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Solution
The fourth proportional to 223,028,736.95, 307,761,612.80 and 128,948,920.00 is: 177,939,076.96
Step by Step Solution
- Step 1: Write the proportion equation
223,028,736.95 : 307,761,612.80 = 128,948,920.00 : x - Step 2: Convert to fraction form
223,028,736.95/307,761,612.80 = 128,948,920.00/x - Step 3: Cross multiply
223,028,736.95x = 307,761,612.80 × 128,948,920.00 - Step 4: Simplify right side
223,028,736.95x = 39,685,527,587,832,472 - Step 5: Solve for x
x = 39,685,527,587,832,472/223,028,736.95 - Step 6: Final answer
x = 177,939,076.96
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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.