Finding the Fourth Proportional to 660,277.80, 990,416.70 and 239,401.80
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Solution
The fourth proportional to 660,277.80, 990,416.70 and 239,401.80 is: 359,102.70
Step by Step Solution
- Step 1: Write the proportion equation
660,277.80 : 990,416.70 = 239,401.80 : x - Step 2: Convert to fraction form
660,277.80/990,416.70 = 239,401.80/x - Step 3: Cross multiply
660,277.80x = 990,416.70 × 239,401.80 - Step 4: Simplify right side
660,277.80x = 237,107,540,730.06 - Step 5: Solve for x
x = 237,107,540,730.06/660,277.80 - Step 6: Final answer
x = 359,102.70
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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.