Finding the Fourth Proportional to 239,577,427.80, 330,617,072.52 and 129,569,140.80
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Solution
The fourth proportional to 239,577,427.80, 330,617,072.52 and 129,569,140.80 is: 178,805,534.45
Step by Step Solution
- Step 1: Write the proportion equation
239,577,427.80 : 330,617,072.52 = 129,569,140.80 : x - Step 2: Convert to fraction form
239,577,427.80/330,617,072.52 = 129,569,140.80/x - Step 3: Cross multiply
239,577,427.80x = 330,617,072.52 × 129,569,140.80 - Step 4: Simplify right side
239,577,427.80x = 42,837,770,020,227,688 - Step 5: Solve for x
x = 42,837,770,020,227,688/239,577,427.80 - Step 6: Final answer
x = 178,805,534.45
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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.