Finding the Fourth Proportional to 216,709,360.75, 299,058,017.92 and 128,675,826.19
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Solution
The fourth proportional to 216,709,360.75, 299,058,017.92 and 128,675,826.19 is: 177,572,105.80
Step by Step Solution
- Step 1: Write the proportion equation
216,709,360.75 : 299,058,017.92 = 128,675,826.19 : x - Step 2: Convert to fraction form
216,709,360.75/299,058,017.92 = 128,675,826.19/x - Step 3: Cross multiply
216,709,360.75x = 299,058,017.92 × 128,675,826.19 - Step 4: Simplify right side
216,709,360.75x = 38,481,537,534,599,824 - Step 5: Solve for x
x = 38,481,537,534,599,824/216,709,360.75 - Step 6: Final answer
x = 177,572,105.80
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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.