Finding the Fourth Proportional to 420,154.80, 630,232.20 and 346,343.55
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Solution
The fourth proportional to 420,154.80, 630,232.20 and 346,343.55 is: 519,515.33
Step by Step Solution
- Step 1: Write the proportion equation
420,154.80 : 630,232.20 = 346,343.55 : x - Step 2: Convert to fraction form
420,154.80/630,232.20 = 346,343.55/x - Step 3: Cross multiply
420,154.80x = 630,232.20 × 346,343.55 - Step 4: Simplify right side
420,154.80x = 218,276,857,472.31 - Step 5: Solve for x
x = 218,276,857,472.31/420,154.80 - Step 6: Final answer
x = 519,515.33
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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.