Finding the Fourth Proportional to 389,704,137.21, 537,791,664.74 and 233,071,219.08
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Solution
The fourth proportional to 389,704,137.21, 537,791,664.74 and 233,071,219.08 is: 321,638,255.65
Step by Step Solution
- Step 1: Write the proportion equation
389,704,137.21 : 537,791,664.74 = 233,071,219.08 : x - Step 2: Convert to fraction form
389,704,137.21/537,791,664.74 = 233,071,219.08/x - Step 3: Cross multiply
389,704,137.21x = 537,791,664.74 × 233,071,219.08 - Step 4: Simplify right side
389,704,137.21x = 125,343,758,910,849,104 - Step 5: Solve for x
x = 125,343,758,910,849,104/389,704,137.21 - Step 6: Final answer
x = 321,638,255.65
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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.