Finding the Fourth Proportional to 420,423.22, 630,259.84 and 154,121.58
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Solution
The fourth proportional to 420,423.22, 630,259.84 and 154,121.58 is: 231,044.90
Step by Step Solution
- Step 1: Write the proportion equation
420,423.22 : 630,259.84 = 154,121.58 : x - Step 2: Convert to fraction form
420,423.22/630,259.84 = 154,121.58/x - Step 3: Cross multiply
420,423.22x = 630,259.84 × 154,121.58 - Step 4: Simplify right side
420,423.22x = 97,136,641,966.04 - Step 5: Solve for x
x = 97,136,641,966.04/420,423.22 - Step 6: Final answer
x = 231,044.90
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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.