Finding the Fourth Proportional to 378,831.58, 522,876.93 and 217,779.95
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Solution
The fourth proportional to 378,831.58, 522,876.93 and 217,779.95 is: 300,587.70
Step by Step Solution
- Step 1: Write the proportion equation
378,831.58 : 522,876.93 = 217,779.95 : x - Step 2: Convert to fraction form
378,831.58/522,876.93 = 217,779.95/x - Step 3: Cross multiply
378,831.58x = 522,876.93 × 217,779.95 - Step 4: Simplify right side
378,831.58x = 113,872,111,671.55 - Step 5: Solve for x
x = 113,872,111,671.55/378,831.58 - Step 6: Final answer
x = 300,587.70
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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.