Finding the Fourth Proportional to 257,531,760,487.38, 386,297,549,809.68 and 68,872,752,750.90
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Solution
The fourth proportional to 257,531,760,487.38, 386,297,549,809.68 and 68,872,752,750.90 is: 103,309,104,810.88
Step by Step Solution
- Step 1: Write the proportion equation
257,531,760,487.38 : 386,297,549,809.68 = 68,872,752,750.90 : x - Step 2: Convert to fraction form
257,531,760,487.38/386,297,549,809.68 = 68,872,752,750.90/x - Step 3: Cross multiply
257,531,760,487.38x = 386,297,549,809.68 × 68,872,752,750.90 - Step 4: Simplify right side
257,531,760,487.38x = 26,605,375,636,320,563,494,912 - Step 5: Solve for x
x = 26,605,375,636,320,563,494,912/257,531,760,487.38 - Step 6: Final answer
x = 103,309,104,810.88
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.