Finding the Fourth Proportional to 539,345.40, 809,309.70 and 239,872.20
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Solution
The fourth proportional to 539,345.40, 809,309.70 and 239,872.20 is: 359,937.99
Step by Step Solution
- Step 1: Write the proportion equation
539,345.40 : 809,309.70 = 239,872.20 : x - Step 2: Convert to fraction form
539,345.40/809,309.70 = 239,872.20/x - Step 3: Cross multiply
539,345.40x = 809,309.70 × 239,872.20 - Step 4: Simplify right side
539,345.40x = 194,130,898,220.34 - Step 5: Solve for x
x = 194,130,898,220.34/539,345.40 - Step 6: Final answer
x = 359,937.99
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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.