Finding the Fourth Proportional to 256,317,645.30, 353,720,048.84 and 138,842,975.49
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Solution
The fourth proportional to 256,317,645.30, 353,720,048.84 and 138,842,975.49 is: 191,604,226.13
Step by Step Solution
- Step 1: Write the proportion equation
256,317,645.30 : 353,720,048.84 = 138,842,975.49 : x - Step 2: Convert to fraction form
256,317,645.30/353,720,048.84 = 138,842,975.49/x - Step 3: Cross multiply
256,317,645.30x = 353,720,048.84 × 138,842,975.49 - Step 4: Simplify right side
256,317,645.30x = 49,111,544,071,413,720 - Step 5: Solve for x
x = 49,111,544,071,413,720/256,317,645.30 - Step 6: Final answer
x = 191,604,226.13
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.