Finding the Fourth Proportional to 395,312.12, 545,531.08 and 214,024.20
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Solution
The fourth proportional to 395,312.12, 545,531.08 and 214,024.20 is: 295,353.59
Step by Step Solution
- Step 1: Write the proportion equation
395,312.12 : 545,531.08 = 214,024.20 : x - Step 2: Convert to fraction form
395,312.12/545,531.08 = 214,024.20/x - Step 3: Cross multiply
395,312.12x = 545,531.08 × 214,024.20 - Step 4: Simplify right side
395,312.12x = 116,756,852,972.14 - Step 5: Solve for x
x = 116,756,852,972.14/395,312.12 - Step 6: Final answer
x = 295,353.59
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1.5x scale
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.