Finding the Fourth Proportional to 254,438,602.62, 381,657,905.75 and 72,685,780.62
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Solution
The fourth proportional to 254,438,602.62, 381,657,905.75 and 72,685,780.62 is: 109,028,671.45
Step by Step Solution
- Step 1: Write the proportion equation
254,438,602.62 : 381,657,905.75 = 72,685,780.62 : x - Step 2: Convert to fraction form
254,438,602.62/381,657,905.75 = 72,685,780.62/x - Step 3: Cross multiply
254,438,602.62x = 381,657,905.75 × 72,685,780.62 - Step 4: Simplify right side
254,438,602.62x = 27,741,102,807,575,136 - Step 5: Solve for x
x = 27,741,102,807,575,136/254,438,602.62 - Step 6: Final answer
x = 109,028,671.45
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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.