Finding the Fourth Proportional to 257,520,369.60, 386,280,554.40 and 247,476,134.70
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Solution
The fourth proportional to 257,520,369.60, 386,280,554.40 and 247,476,134.70 is: 371,214,202.05
Step by Step Solution
- Step 1: Write the proportion equation
257,520,369.60 : 386,280,554.40 = 247,476,134.70 : x - Step 2: Convert to fraction form
257,520,369.60/386,280,554.40 = 247,476,134.70/x - Step 3: Cross multiply
257,520,369.60x = 386,280,554.40 × 247,476,134.70 - Step 4: Simplify right side
257,520,369.60x = 95,595,218,512,685,072 - Step 5: Solve for x
x = 95,595,218,512,685,072/257,520,369.60 - Step 6: Final answer
x = 371,214,202.05
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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.