Finding the Fourth Proportional to 228,970.40, 315,987.36 and 133,461.68
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Solution
The fourth proportional to 228,970.40, 315,987.36 and 133,461.68 is: 184,181.90
Step by Step Solution
- Step 1: Write the proportion equation
228,970.40 : 315,987.36 = 133,461.68 : x - Step 2: Convert to fraction form
228,970.40/315,987.36 = 133,461.68/x - Step 3: Cross multiply
228,970.40x = 315,987.36 × 133,461.68 - Step 4: Simplify right side
228,970.40x = 42,172,203,924.36 - Step 5: Solve for x
x = 42,172,203,924.36/228,970.40 - Step 6: Final answer
x = 184,181.90
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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.