Finding the Fourth Proportional to 415,128.90, 622,693.35 and 115,655.70
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Solution
The fourth proportional to 415,128.90, 622,693.35 and 115,655.70 is: 173,483.55
Step by Step Solution
- Step 1: Write the proportion equation
415,128.90 : 622,693.35 = 115,655.70 : x - Step 2: Convert to fraction form
415,128.90/622,693.35 = 115,655.70/x - Step 3: Cross multiply
415,128.90x = 622,693.35 × 115,655.70 - Step 4: Simplify right side
415,128.90x = 72,018,035,279.60 - Step 5: Solve for x
x = 72,018,035,279.60/415,128.90 - Step 6: Final answer
x = 173,483.55
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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.