Finding the Fourth Proportional to 225,267.12, 310,937.76 and 129,837.30
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Solution
The fourth proportional to 225,267.12, 310,937.76 and 129,837.30 is: 179,215.32
Step by Step Solution
- Step 1: Write the proportion equation
225,267.12 : 310,937.76 = 129,837.30 : x - Step 2: Convert to fraction form
225,267.12/310,937.76 = 129,837.30/x - Step 3: Cross multiply
225,267.12x = 310,937.76 × 129,837.30 - Step 4: Simplify right side
225,267.12x = 40,371,319,226.45 - Step 5: Solve for x
x = 40,371,319,226.45/225,267.12 - Step 6: Final answer
x = 179,215.32
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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.