Finding the Fourth Proportional to 390,836.21, 585,610.36 and 358,152.71
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Solution
The fourth proportional to 390,836.21, 585,610.36 and 358,152.71 is: 536,638.96
Step by Step Solution
- Step 1: Write the proportion equation
390,836.21 : 585,610.36 = 358,152.71 : x - Step 2: Convert to fraction form
390,836.21/585,610.36 = 358,152.71/x - Step 3: Cross multiply
390,836.21x = 585,610.36 × 358,152.71 - Step 4: Simplify right side
390,836.21x = 209,737,933,614.64 - Step 5: Solve for x
x = 209,737,933,614.64/390,836.21 - Step 6: Final answer
x = 536,638.96
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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.