Finding the Fourth Proportional to 324,139.60, 486,646.80 and 257,654.80
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Solution
The fourth proportional to 324,139.60, 486,646.80 and 257,654.80 is: 386,829.88
Step by Step Solution
- Step 1: Write the proportion equation
324,139.60 : 486,646.80 = 257,654.80 : x - Step 2: Convert to fraction form
324,139.60/486,646.80 = 257,654.80/x - Step 3: Cross multiply
324,139.60x = 486,646.80 × 257,654.80 - Step 4: Simplify right side
324,139.60x = 125,386,883,924.64 - Step 5: Solve for x
x = 125,386,883,924.64/324,139.60 - Step 6: Final answer
x = 386,829.88
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1.5x scale
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.