Finding the Fourth Proportional to 268,935.60, 403,403.40 and 257,125.80
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Solution
The fourth proportional to 268,935.60, 403,403.40 and 257,125.80 is: 385,688.70
Step by Step Solution
- Step 1: Write the proportion equation
268,935.60 : 403,403.40 = 257,125.80 : x - Step 2: Convert to fraction form
268,935.60/403,403.40 = 257,125.80/x - Step 3: Cross multiply
268,935.60x = 403,403.40 × 257,125.80 - Step 4: Simplify right side
268,935.60x = 103,725,421,947.72 - Step 5: Solve for x
x = 103,725,421,947.72/268,935.60 - Step 6: Final answer
x = 385,688.70
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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.