Finding the Fourth Proportional to 245,855.70, 368,783.55 and 79,643.70
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Solution
The fourth proportional to 245,855.70, 368,783.55 and 79,643.70 is: 119,465.55
Step by Step Solution
- Step 1: Write the proportion equation
245,855.70 : 368,783.55 = 79,643.70 : x - Step 2: Convert to fraction form
245,855.70/368,783.55 = 79,643.70/x - Step 3: Cross multiply
245,855.70x = 368,783.55 × 79,643.70 - Step 4: Simplify right side
245,855.70x = 29,371,286,421.14 - Step 5: Solve for x
x = 29,371,286,421.14/245,855.70 - Step 6: Final answer
x = 119,465.55
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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.