Finding the Fourth Proportional to 315,719.08, 473,753.58 and 128,716.12
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Solution
The fourth proportional to 315,719.08, 473,753.58 and 128,716.12 is: 193,145.51
Step by Step Solution
- Step 1: Write the proportion equation
315,719.08 : 473,753.58 = 128,716.12 : x - Step 2: Convert to fraction form
315,719.08/473,753.58 = 128,716.12/x - Step 3: Cross multiply
315,719.08x = 473,753.58 × 128,716.12 - Step 4: Simplify right side
315,719.08x = 60,979,722,653.71 - Step 5: Solve for x
x = 60,979,722,653.71/315,719.08 - Step 6: Final answer
x = 193,145.51
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.