Finding the Fourth Proportional to 260,428.68, 390,654.36 and 127,420.92
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Solution
The fourth proportional to 260,428.68, 390,654.36 and 127,420.92 is: 191,136.93
Step by Step Solution
- Step 1: Write the proportion equation
260,428.68 : 390,654.36 = 127,420.92 : x - Step 2: Convert to fraction form
260,428.68/390,654.36 = 127,420.92/x - Step 3: Cross multiply
260,428.68x = 390,654.36 × 127,420.92 - Step 4: Simplify right side
260,428.68x = 49,777,537,953.21 - Step 5: Solve for x
x = 49,777,537,953.21/260,428.68 - Step 6: Final answer
x = 191,136.93
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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.