Finding the Fourth Proportional to 256,131,503.18, 353,461,588.51 and 138,656,829.62
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Solution
The fourth proportional to 256,131,503.18, 353,461,588.51 and 138,656,829.62 is: 191,346,486.66
Step by Step Solution
- Step 1: Write the proportion equation
256,131,503.18 : 353,461,588.51 = 138,656,829.62 : x - Step 2: Convert to fraction form
256,131,503.18/353,461,588.51 = 138,656,829.62/x - Step 3: Cross multiply
256,131,503.18x = 353,461,588.51 × 138,656,829.62 - Step 4: Simplify right side
256,131,503.18x = 49,009,863,255,245,624 - Step 5: Solve for x
x = 49,009,863,255,245,624/256,131,503.18 - Step 6: Final answer
x = 191,346,486.66
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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.