Finding the Fourth Proportional to 660,313.80, 990,470.70 and 239,437.80
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Solution
The fourth proportional to 660,313.80, 990,470.70 and 239,437.80 is: 359,156.70
Step by Step Solution
- Step 1: Write the proportion equation
660,313.80 : 990,470.70 = 239,437.80 : x - Step 2: Convert to fraction form
660,313.80/990,470.70 = 239,437.80/x - Step 3: Cross multiply
660,313.80x = 990,470.70 × 239,437.80 - Step 4: Simplify right side
660,313.80x = 237,156,125,372.46 - Step 5: Solve for x
x = 237,156,125,372.46/660,313.80 - Step 6: Final answer
x = 359,156.70
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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.