Finding the Fourth Proportional to 317,687,615.19, 438,453,037.80 and 178,468,968.87
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Solution
The fourth proportional to 317,687,615.19, 438,453,037.80 and 178,468,968.87 is: 246,311,967.52
Step by Step Solution
- Step 1: Write the proportion equation
317,687,615.19 : 438,453,037.80 = 178,468,968.87 : x - Step 2: Convert to fraction form
317,687,615.19/438,453,037.80 = 178,468,968.87/x - Step 3: Cross multiply
317,687,615.19x = 438,453,037.80 × 178,468,968.87 - Step 4: Simplify right side
317,687,615.19x = 78,250,261,554,085,136 - Step 5: Solve for x
x = 78,250,261,554,085,136/317,687,615.19 - Step 6: Final answer
x = 246,311,967.52
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.