Finding the Fourth Proportional to 312,119.07, 430,678.14 and 189,547.71
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Solution
The fourth proportional to 312,119.07, 430,678.14 and 189,547.71 is: 261,547.80
Step by Step Solution
- Step 1: Write the proportion equation
312,119.07 : 430,678.14 = 189,547.71 : x - Step 2: Convert to fraction form
312,119.07/430,678.14 = 189,547.71/x - Step 3: Cross multiply
312,119.07x = 430,678.14 × 189,547.71 - Step 4: Simplify right side
312,119.07x = 81,634,055,184.06 - Step 5: Solve for x
x = 81,634,055,184.06/312,119.07 - Step 6: Final answer
x = 261,547.80
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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.