Finding the Fourth Proportional to 221,530,407.28, 305,729,389.08 and 126,164,948.36
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Solution
The fourth proportional to 221,530,407.28, 305,729,389.08 and 126,164,948.36 is: 174,117,553.70
Step by Step Solution
- Step 1: Write the proportion equation
221,530,407.28 : 305,729,389.08 = 126,164,948.36 : x - Step 2: Convert to fraction form
221,530,407.28/305,729,389.08 = 126,164,948.36/x - Step 3: Cross multiply
221,530,407.28x = 305,729,389.08 × 126,164,948.36 - Step 4: Simplify right side
221,530,407.28x = 38,572,332,585,602,104 - Step 5: Solve for x
x = 38,572,332,585,602,104/221,530,407.28 - Step 6: Final answer
x = 174,117,553.70
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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.