Finding the Fourth Proportional to 235,812.45, 325,530.86 and 138,985.76
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Solution
The fourth proportional to 235,812.45, 325,530.86 and 138,985.76 is: 191,864.99
Step by Step Solution
- Step 1: Write the proportion equation
235,812.45 : 325,530.86 = 138,985.76 : x - Step 2: Convert to fraction form
235,812.45/325,530.86 = 138,985.76/x - Step 3: Cross multiply
235,812.45x = 325,530.86 × 138,985.76 - Step 4: Simplify right side
235,812.45x = 45,244,153,980.55 - Step 5: Solve for x
x = 45,244,153,980.55/235,812.45 - Step 6: Final answer
x = 191,864.99
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1.5x scale
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.