Finding the Fourth Proportional to 318,877,489.96, 478,316,241.42 and 76,540,393.96
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Solution
The fourth proportional to 318,877,489.96, 478,316,241.42 and 76,540,393.96 is: 114,810,592.50
Step by Step Solution
- Step 1: Write the proportion equation
318,877,489.96 : 478,316,241.42 = 76,540,393.96 : x - Step 2: Convert to fraction form
318,877,489.96/478,316,241.42 = 76,540,393.96/x - Step 3: Cross multiply
318,877,489.96x = 478,316,241.42 × 76,540,393.96 - Step 4: Simplify right side
318,877,489.96x = 36,610,513,555,753,264 - Step 5: Solve for x
x = 36,610,513,555,753,264/318,877,489.96 - Step 6: Final answer
x = 114,810,592.50
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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.