Finding the Fourth Proportional to 343,742.78, 515,641.84 and 130,612.84
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Solution
The fourth proportional to 343,742.78, 515,641.84 and 130,612.84 is: 195,929.77
Step by Step Solution
- Step 1: Write the proportion equation
343,742.78 : 515,641.84 = 130,612.84 : x - Step 2: Convert to fraction form
343,742.78/515,641.84 = 130,612.84/x - Step 3: Cross multiply
343,742.78x = 515,641.84 × 130,612.84 - Step 4: Simplify right side
343,742.78x = 67,349,445,145.23 - Step 5: Solve for x
x = 67,349,445,145.23/343,742.78 - Step 6: Final answer
x = 195,929.77
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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.