Finding the Fourth Proportional to 216,927.60, 299,357.78 and 121,435.08
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Solution
The fourth proportional to 216,927.60, 299,357.78 and 121,435.08 is: 167,579.12
Step by Step Solution
- Step 1: Write the proportion equation
216,927.60 : 299,357.78 = 121,435.08 : x - Step 2: Convert to fraction form
216,927.60/299,357.78 = 121,435.08/x - Step 3: Cross multiply
216,927.60x = 299,357.78 × 121,435.08 - Step 4: Simplify right side
216,927.60x = 36,352,535,962.92 - Step 5: Solve for x
x = 36,352,535,962.92/216,927.60 - Step 6: Final answer
x = 167,579.12
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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.