Finding the Fourth Proportional to 257,276.81, 385,880.18 and 67,721.31
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Solution
The fourth proportional to 257,276.81, 385,880.18 and 67,721.31 is: 101,572.74
Step by Step Solution
- Step 1: Write the proportion equation
257,276.81 : 385,880.18 = 67,721.31 : x - Step 2: Convert to fraction form
257,276.81/385,880.18 = 67,721.31/x - Step 3: Cross multiply
257,276.81x = 385,880.18 × 67,721.31 - Step 4: Simplify right side
257,276.81x = 26,132,309,363.23 - Step 5: Solve for x
x = 26,132,309,363.23/257,276.81 - Step 6: Final answer
x = 101,572.74
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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.