Finding the Fourth Proportional to 317,640,316.72, 438,356,815.44 and 176,511,010
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Solution
The fourth proportional to 317,640,316.72, 438,356,815.44 and 176,511,010 is: 243,592,516.95
Step by Step Solution
- Step 1: Write the proportion equation
317,640,316.72 : 438,356,815.44 = 176,511,010 : x - Step 2: Convert to fraction form
317,640,316.72/438,356,815.44 = 176,511,010/x - Step 3: Cross multiply
317,640,316.72x = 438,356,815.44 × 176,511,010 - Step 4: Simplify right side
317,640,316.72x = 77,374,804,233,698,000 - Step 5: Solve for x
x = 77,374,804,233,698,000/317,640,316.72 - Step 6: Final answer
x = 243,592,516.95
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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.