Finding the Fourth Proportional to 239,580,372.50, 330,620,913.82 and 129,572,085.38
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Solution
The fourth proportional to 239,580,372.50, 330,620,913.82 and 129,572,085.38 is: 178,809,477.70
Step by Step Solution
- Step 1: Write the proportion equation
239,580,372.50 : 330,620,913.82 = 129,572,085.38 : x - Step 2: Convert to fraction form
239,580,372.50/330,620,913.82 = 129,572,085.38/x - Step 3: Cross multiply
239,580,372.50x = 330,620,913.82 × 129,572,085.38 - Step 4: Simplify right side
239,580,372.50x = 42,839,241,273,898,656 - Step 5: Solve for x
x = 42,839,241,273,898,656/239,580,372.50 - Step 6: Final answer
x = 178,809,477.70
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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.