Finding the Fourth Proportional to 260,417.11, 390,656.91 and 91,902.64
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Solution
The fourth proportional to 260,417.11, 390,656.91 and 91,902.64 is: 137,864.99
Step by Step Solution
- Step 1: Write the proportion equation
260,417.11 : 390,656.91 = 91,902.64 : x - Step 2: Convert to fraction form
260,417.11/390,656.91 = 91,902.64/x - Step 3: Cross multiply
260,417.11x = 390,656.91 × 91,902.64 - Step 4: Simplify right side
260,417.11x = 35,902,401,363.24 - Step 5: Solve for x
x = 35,902,401,363.24/260,417.11 - Step 6: Final answer
x = 137,864.99
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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.