Finding the Fourth Proportional to 229,430.88, 316,580.40 and 128,809.44
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Solution
The fourth proportional to 229,430.88, 316,580.40 and 128,809.44 is: 177,737.82
Step by Step Solution
- Step 1: Write the proportion equation
229,430.88 : 316,580.40 = 128,809.44 : x - Step 2: Convert to fraction form
229,430.88/316,580.40 = 128,809.44/x - Step 3: Cross multiply
229,430.88x = 316,580.40 × 128,809.44 - Step 4: Simplify right side
229,430.88x = 40,778,544,038.98 - Step 5: Solve for x
x = 40,778,544,038.98/229,430.88 - Step 6: Final answer
x = 177,737.82
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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.