Finding the Fourth Proportional to 278,257.18, 383,994.90 and 157,395.88
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Solution
The fourth proportional to 278,257.18, 383,994.90 and 157,395.88 is: 217,206.31
Step by Step Solution
- Step 1: Write the proportion equation
278,257.18 : 383,994.90 = 157,395.88 : x - Step 2: Convert to fraction form
278,257.18/383,994.90 = 157,395.88/x - Step 3: Cross multiply
278,257.18x = 383,994.90 × 157,395.88 - Step 4: Simplify right side
278,257.18x = 60,439,215,201.01 - Step 5: Solve for x
x = 60,439,215,201.01/278,257.18 - Step 6: Final answer
x = 217,206.31
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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.