Finding the Fourth Proportional to 390,734,795.36, 539,229,181.92 and 214,530,217.40
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Solution
The fourth proportional to 390,734,795.36, 539,229,181.92 and 214,530,217.40 is: 296,060,025.88
Step by Step Solution
- Step 1: Write the proportion equation
390,734,795.36 : 539,229,181.92 = 214,530,217.40 : x - Step 2: Convert to fraction form
390,734,795.36/539,229,181.92 = 214,530,217.40/x - Step 3: Cross multiply
390,734,795.36x = 539,229,181.92 × 214,530,217.40 - Step 4: Simplify right side
390,734,795.36x = 115,680,953,625,721,744 - Step 5: Solve for x
x = 115,680,953,625,721,744/390,734,795.36 - Step 6: Final answer
x = 296,060,025.88
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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.