Finding the Fourth Proportional to 312,552.95, 431,325.14 and 169,312.88
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Solution
The fourth proportional to 312,552.95, 431,325.14 and 169,312.88 is: 233,652.90
Step by Step Solution
- Step 1: Write the proportion equation
312,552.95 : 431,325.14 = 169,312.88 : x - Step 2: Convert to fraction form
312,552.95/431,325.14 = 169,312.88/x - Step 3: Cross multiply
312,552.95x = 431,325.14 × 169,312.88 - Step 4: Simplify right side
312,552.95x = 73,028,901,901.55 - Step 5: Solve for x
x = 73,028,901,901.55/312,552.95 - Step 6: Final answer
x = 233,652.90
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1.5x scale
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.