Finding the Fourth Proportional to 211,809.84, 292,298.56 and 121,166.80
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Solution
The fourth proportional to 211,809.84, 292,298.56 and 121,166.80 is: 167,210.75
Step by Step Solution
- Step 1: Write the proportion equation
211,809.84 : 292,298.56 = 121,166.80 : x - Step 2: Convert to fraction form
211,809.84/292,298.56 = 121,166.80/x - Step 3: Cross multiply
211,809.84x = 292,298.56 × 121,166.80 - Step 4: Simplify right side
211,809.84x = 35,416,881,159.81 - Step 5: Solve for x
x = 35,416,881,159.81/211,809.84 - Step 6: Final answer
x = 167,210.75
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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.