Finding the Fourth Proportional to 368,251.78, 549,689.30 and 315,997.06
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Solution
The fourth proportional to 368,251.78, 549,689.30 and 315,997.06 is: 471,688.70
Step by Step Solution
- Step 1: Write the proportion equation
368,251.78 : 549,689.30 = 315,997.06 : x - Step 2: Convert to fraction form
368,251.78/549,689.30 = 315,997.06/x - Step 3: Cross multiply
368,251.78x = 549,689.30 × 315,997.06 - Step 4: Simplify right side
368,251.78x = 173,700,202,713.46 - Step 5: Solve for x
x = 173,700,202,713.46/368,251.78 - Step 6: Final answer
x = 471,688.70
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.