Finding the Fourth Proportional to 278,646.37, 384,531.93 and 157,787.62
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Solution
The fourth proportional to 278,646.37, 384,531.93 and 157,787.62 is: 217,746.88
Step by Step Solution
- Step 1: Write the proportion equation
278,646.37 : 384,531.93 = 157,787.62 : x - Step 2: Convert to fraction form
278,646.37/384,531.93 = 157,787.62/x - Step 3: Cross multiply
278,646.37x = 384,531.93 × 157,787.62 - Step 4: Simplify right side
278,646.37x = 60,674,378,048.71 - Step 5: Solve for x
x = 60,674,378,048.71/278,646.37 - Step 6: Final answer
x = 217,746.88
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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.