Finding the Fourth Proportional to 286,438.19, 395,285.83 and 157,387.13
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Solution
The fourth proportional to 286,438.19, 395,285.83 and 157,387.13 is: 217,194.85
Step by Step Solution
- Step 1: Write the proportion equation
286,438.19 : 395,285.83 = 157,387.13 : x - Step 2: Convert to fraction form
286,438.19/395,285.83 = 157,387.13/x - Step 3: Cross multiply
286,438.19x = 395,285.83 × 157,387.13 - Step 4: Simplify right side
286,438.19x = 62,212,899,943.47 - Step 5: Solve for x
x = 62,212,899,943.47/286,438.19 - Step 6: Final answer
x = 217,194.85
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1.5x scale
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.