Finding the Fourth Proportional to 338,947.93, 508,424.91 and 86,228.74
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Solution
The fourth proportional to 338,947.93, 508,424.91 and 86,228.74 is: 129,343.88
Step by Step Solution
- Step 1: Write the proportion equation
338,947.93 : 508,424.91 = 86,228.74 : x - Step 2: Convert to fraction form
338,947.93/508,424.91 = 86,228.74/x - Step 3: Cross multiply
338,947.93x = 508,424.91 × 86,228.74 - Step 4: Simplify right side
338,947.93x = 43,840,839,373.91 - Step 5: Solve for x
x = 43,840,839,373.91/338,947.93 - Step 6: Final answer
x = 129,343.88
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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.