Finding the Fourth Proportional to 256,317,684.84, 353,720,103.36 and 138,843,015.12
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Solution
The fourth proportional to 256,317,684.84, 353,720,103.36 and 138,843,015.12 is: 191,604,280.80
Step by Step Solution
- Step 1: Write the proportion equation
256,317,684.84 : 353,720,103.36 = 138,843,015.12 : x - Step 2: Convert to fraction form
256,317,684.84/353,720,103.36 = 138,843,015.12/x - Step 3: Cross multiply
256,317,684.84x = 353,720,103.36 × 138,843,015.12 - Step 4: Simplify right side
256,317,684.84x = 49,111,565,659,060,448 - Step 5: Solve for x
x = 49,111,565,659,060,448/256,317,684.84 - Step 6: Final answer
x = 191,604,280.80
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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.