Finding the Fourth Proportional to 420,350.40, 630,452.70 and 153,973.80
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Solution
The fourth proportional to 420,350.40, 630,452.70 and 153,973.80 is: 230,934.00
Step by Step Solution
- Step 1: Write the proportion equation
420,350.40 : 630,452.70 = 153,973.80 : x - Step 2: Convert to fraction form
420,350.40/630,452.70 = 153,973.80/x - Step 3: Cross multiply
420,350.40x = 630,452.70 × 153,973.80 - Step 4: Simplify right side
420,350.40x = 97,073,197,939.26 - Step 5: Solve for x
x = 97,073,197,939.26/420,350.40 - Step 6: Final answer
x = 230,934.00
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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.