Finding the Fourth Proportional to 312,115,745.18, 430,719,691.43 and 186,667,921.71
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Solution
The fourth proportional to 312,115,745.18, 430,719,691.43 and 186,667,921.71 is: 257,601,709.88
Step by Step Solution
- Step 1: Write the proportion equation
312,115,745.18 : 430,719,691.43 = 186,667,921.71 : x - Step 2: Convert to fraction form
312,115,745.18/430,719,691.43 = 186,667,921.71/x - Step 3: Cross multiply
312,115,745.18x = 430,719,691.43 × 186,667,921.71 - Step 4: Simplify right side
312,115,745.18x = 80,401,549,637,877,264 - Step 5: Solve for x
x = 80,401,549,637,877,264/312,115,745.18 - Step 6: Final answer
x = 257,601,709.88
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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.