Finding the Fourth Proportional to 420,444.42, 630,291.68 and 154,142.88
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Solution
The fourth proportional to 420,444.42, 630,291.68 and 154,142.88 is: 231,076.86
Step by Step Solution
- Step 1: Write the proportion equation
420,444.42 : 630,291.68 = 154,142.88 : x - Step 2: Convert to fraction form
420,444.42/630,291.68 = 154,142.88/x - Step 3: Cross multiply
420,444.42x = 630,291.68 × 154,142.88 - Step 4: Simplify right side
420,444.42x = 97,154,974,795.24 - Step 5: Solve for x
x = 97,154,974,795.24/420,444.42 - Step 6: Final answer
x = 231,076.86
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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.