Finding the Fourth Proportional to 306,903.60, 460,355.40 and 212,425.20
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Solution
The fourth proportional to 306,903.60, 460,355.40 and 212,425.20 is: 318,637.80
Step by Step Solution
- Step 1: Write the proportion equation
306,903.60 : 460,355.40 = 212,425.20 : x - Step 2: Convert to fraction form
306,903.60/460,355.40 = 212,425.20/x - Step 3: Cross multiply
306,903.60x = 460,355.40 × 212,425.20 - Step 4: Simplify right side
306,903.60x = 97,791,087,916.08 - Step 5: Solve for x
x = 97,791,087,916.08/306,903.60 - Step 6: Final answer
x = 318,637.80
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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.