Finding the Fourth Proportional to 256,971,623.94, 385,472,387.97 and 72,723,686.58
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Solution
The fourth proportional to 256,971,623.94, 385,472,387.97 and 72,723,686.58 is: 109,089,761.34
Step by Step Solution
- Step 1: Write the proportion equation
256,971,623.94 : 385,472,387.97 = 72,723,686.58 : x - Step 2: Convert to fraction form
256,971,623.94/385,472,387.97 = 72,723,686.58/x - Step 3: Cross multiply
256,971,623.94x = 385,472,387.97 × 72,723,686.58 - Step 4: Simplify right side
256,971,623.94x = 28,032,973,127,974,444 - Step 5: Solve for x
x = 28,032,973,127,974,444/256,971,623.94 - Step 6: Final answer
x = 109,089,761.34
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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.