Finding the Fourth Proportional to 420,503.70, 630,855.99 and 140,023.38
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Solution
The fourth proportional to 420,503.70, 630,855.99 and 140,023.38 is: 210,068.52
Step by Step Solution
- Step 1: Write the proportion equation
420,503.70 : 630,855.99 = 140,023.38 : x - Step 2: Convert to fraction form
420,503.70/630,855.99 = 140,023.38/x - Step 3: Cross multiply
420,503.70x = 630,855.99 × 140,023.38 - Step 4: Simplify right side
420,503.70x = 88,334,588,013.05 - Step 5: Solve for x
x = 88,334,588,013.05/420,503.70 - Step 6: Final answer
x = 210,068.52
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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.