Finding the Fourth Proportional to 279,119,766.72, 385,185,295.68 and 155,357,786.88
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Solution
The fourth proportional to 279,119,766.72, 385,185,295.68 and 155,357,786.88 is: 214,393,755.69
Step by Step Solution
- Step 1: Write the proportion equation
279,119,766.72 : 385,185,295.68 = 155,357,786.88 : x - Step 2: Convert to fraction form
279,119,766.72/385,185,295.68 = 155,357,786.88/x - Step 3: Cross multiply
279,119,766.72x = 385,185,295.68 × 155,357,786.88 - Step 4: Simplify right side
279,119,766.72x = 59,841,535,075,563,224 - Step 5: Solve for x
x = 59,841,535,075,563,224/279,119,766.72 - Step 6: Final answer
x = 214,393,755.69
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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.