Finding the Fourth Proportional to 390,962.92, 586,492.67 and 138,191.28
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Solution
The fourth proportional to 390,962.92, 586,492.67 and 138,191.28 is: 207,303.99
Step by Step Solution
- Step 1: Write the proportion equation
390,962.92 : 586,492.67 = 138,191.28 : x - Step 2: Convert to fraction form
390,962.92/586,492.67 = 138,191.28/x - Step 3: Cross multiply
390,962.92x = 586,492.67 × 138,191.28 - Step 4: Simplify right side
390,962.92x = 81,048,172,086.96 - Step 5: Solve for x
x = 81,048,172,086.96/390,962.92 - Step 6: Final answer
x = 207,303.99
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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.