Finding the Fourth Proportional to 312,100,134.48, 430,692,798.24 and 172,867,907.70
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Solution
The fourth proportional to 312,100,134.48, 430,692,798.24 and 172,867,907.70 is: 238,554,728.65
Step by Step Solution
- Step 1: Write the proportion equation
312,100,134.48 : 430,692,798.24 = 172,867,907.70 : x - Step 2: Convert to fraction form
312,100,134.48/430,692,798.24 = 172,867,907.70/x - Step 3: Cross multiply
312,100,134.48x = 430,692,798.24 × 172,867,907.70 - Step 4: Simplify right side
312,100,134.48x = 74,452,962,893,207,040 - Step 5: Solve for x
x = 74,452,962,893,207,040/312,100,134.48 - Step 6: Final answer
x = 238,554,728.65
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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.