Finding the Fourth Proportional to 390,575.76, 585,742.49 and 137,797.14
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Solution
The fourth proportional to 390,575.76, 585,742.49 and 137,797.14 is: 206,652.96
Step by Step Solution
- Step 1: Write the proportion equation
390,575.76 : 585,742.49 = 137,797.14 : x - Step 2: Convert to fraction form
390,575.76/585,742.49 = 137,797.14/x - Step 3: Cross multiply
390,575.76x = 585,742.49 × 137,797.14 - Step 4: Simplify right side
390,575.76x = 80,713,636,280.78 - Step 5: Solve for x
x = 80,713,636,280.78/390,575.76 - Step 6: Final answer
x = 206,652.96
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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.