Finding the Fourth Proportional to 238,473.12, 329,118.21 and 142,988.70
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Solution
The fourth proportional to 238,473.12, 329,118.21 and 142,988.70 is: 197,339.58
Step by Step Solution
- Step 1: Write the proportion equation
238,473.12 : 329,118.21 = 142,988.70 : x - Step 2: Convert to fraction form
238,473.12/329,118.21 = 142,988.70/x - Step 3: Cross multiply
238,473.12x = 329,118.21 × 142,988.70 - Step 4: Simplify right side
238,473.12x = 47,060,184,994.23 - Step 5: Solve for x
x = 47,060,184,994.23/238,473.12 - Step 6: Final answer
x = 197,339.58
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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.