Finding the Fourth Proportional to 279,242,072.79, 385,381,279.67 and 208,554,962.31
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Solution
The fourth proportional to 279,242,072.79, 385,381,279.67 and 208,554,962.31 is: 287,826,176.96
Step by Step Solution
- Step 1: Write the proportion equation
279,242,072.79 : 385,381,279.67 = 208,554,962.31 : x - Step 2: Convert to fraction form
279,242,072.79/385,381,279.67 = 208,554,962.31/x - Step 3: Cross multiply
279,242,072.79x = 385,381,279.67 × 208,554,962.31 - Step 4: Simplify right side
279,242,072.79x = 80,373,178,255,513,648 - Step 5: Solve for x
x = 80,373,178,255,513,648/279,242,072.79 - Step 6: Final answer
x = 287,826,176.96
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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.