Finding the Fourth Proportional to 420,420.96, 580,177.76 and 229,430.16
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Solution
The fourth proportional to 420,420.96, 580,177.76 and 229,430.16 is: 316,611.89
Step by Step Solution
- Step 1: Write the proportion equation
420,420.96 : 580,177.76 = 229,430.16 : x - Step 2: Convert to fraction form
420,420.96/580,177.76 = 229,430.16/x - Step 3: Cross multiply
420,420.96x = 580,177.76 × 229,430.16 - Step 4: Simplify right side
420,420.96x = 133,110,276,305.24 - Step 5: Solve for x
x = 133,110,276,305.24/420,420.96 - Step 6: Final answer
x = 316,611.89
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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.