Finding the Fourth Proportional to 403,722.80, 605,065.80 and 309,762.80
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Solution
The fourth proportional to 403,722.80, 605,065.80 and 309,762.80 is: 464,246.45
Step by Step Solution
- Step 1: Write the proportion equation
403,722.80 : 605,065.80 = 309,762.80 : x - Step 2: Convert to fraction form
403,722.80/605,065.80 = 309,762.80/x - Step 3: Cross multiply
403,722.80x = 605,065.80 × 309,762.80 - Step 4: Simplify right side
403,722.80x = 187,426,876,392.24 - Step 5: Solve for x
x = 187,426,876,392.24/403,722.80 - Step 6: Final answer
x = 464,246.45
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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.