Finding the Fourth Proportional to 256,131,502.18, 353,461,587.13 and 138,656,828.62
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Solution
The fourth proportional to 256,131,502.18, 353,461,587.13 and 138,656,828.62 is: 191,346,485.28
Step by Step Solution
- Step 1: Write the proportion equation
256,131,502.18 : 353,461,587.13 = 138,656,828.62 : x - Step 2: Convert to fraction form
256,131,502.18/353,461,587.13 = 138,656,828.62/x - Step 3: Cross multiply
256,131,502.18x = 353,461,587.13 × 138,656,828.62 - Step 4: Simplify right side
256,131,502.18x = 49,009,862,710,437,608 - Step 5: Solve for x
x = 49,009,862,710,437,608/256,131,502.18 - Step 6: Final answer
x = 191,346,485.28
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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.