Finding the Fourth Proportional to 420,125.67, 630,270.45 and 135,886.68
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Solution
The fourth proportional to 420,125.67, 630,270.45 and 135,886.68 is: 203,856.52
Step by Step Solution
- Step 1: Write the proportion equation
420,125.67 : 630,270.45 = 135,886.68 : x - Step 2: Convert to fraction form
420,125.67/630,270.45 = 135,886.68/x - Step 3: Cross multiply
420,125.67x = 630,270.45 × 135,886.68 - Step 4: Simplify right side
420,125.67x = 85,645,358,952.61 - Step 5: Solve for x
x = 85,645,358,952.61/420,125.67 - Step 6: Final answer
x = 203,856.52
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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.