Finding the Fourth Proportional to 279,068.58, 385,106.58 and 158,221.08
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Solution
The fourth proportional to 279,068.58, 385,106.58 and 158,221.08 is: 218,340.52
Step by Step Solution
- Step 1: Write the proportion equation
279,068.58 : 385,106.58 = 158,221.08 : x - Step 2: Convert to fraction form
279,068.58/385,106.58 = 158,221.08/x - Step 3: Cross multiply
279,068.58x = 385,106.58 × 158,221.08 - Step 4: Simplify right side
279,068.58x = 60,931,979,002.71 - Step 5: Solve for x
x = 60,931,979,002.71/279,068.58 - Step 6: Final answer
x = 218,340.52
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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.