Finding the Fourth Proportional to 213,132,382.80, 319,698,574.20 and 144,257,629.20
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Solution
The fourth proportional to 213,132,382.80, 319,698,574.20 and 144,257,629.20 is: 216,386,443.80
Step by Step Solution
- Step 1: Write the proportion equation
213,132,382.80 : 319,698,574.20 = 144,257,629.20 : x - Step 2: Convert to fraction form
213,132,382.80/319,698,574.20 = 144,257,629.20/x - Step 3: Cross multiply
213,132,382.80x = 319,698,574.20 × 144,257,629.20 - Step 4: Simplify right side
213,132,382.80x = 46,118,958,372,712,280 - Step 5: Solve for x
x = 46,118,958,372,712,280/213,132,382.80 - Step 6: Final answer
x = 216,386,443.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.