Finding the Fourth Proportional to 211,863.84, 292,423.02 and 121,272.32
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Solution
The fourth proportional to 211,863.84, 292,423.02 and 121,272.32 is: 167,384.95
Step by Step Solution
- Step 1: Write the proportion equation
211,863.84 : 292,423.02 = 121,272.32 : x - Step 2: Convert to fraction form
211,863.84/292,423.02 = 121,272.32/x - Step 3: Cross multiply
211,863.84x = 292,423.02 × 121,272.32 - Step 4: Simplify right side
211,863.84x = 35,462,818,056.81 - Step 5: Solve for x
x = 35,462,818,056.81/211,863.84 - Step 6: Final answer
x = 167,384.95
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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.