Finding the Fourth Proportional to 309,739.98, 426,988.73 and 218,935.74
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Solution
The fourth proportional to 309,739.98, 426,988.73 and 218,935.74 is: 301,811.52
Step by Step Solution
- Step 1: Write the proportion equation
309,739.98 : 426,988.73 = 218,935.74 : x - Step 2: Convert to fraction form
309,739.98/426,988.73 = 218,935.74/x - Step 3: Cross multiply
309,739.98x = 426,988.73 × 218,935.74 - Step 4: Simplify right side
309,739.98x = 93,483,093,574.21 - Step 5: Solve for x
x = 93,483,093,574.21/309,739.98 - Step 6: Final answer
x = 301,811.52
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.