Finding the Fourth Proportional to 420,267.70, 630,406.12 and 120,750.76
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Solution
The fourth proportional to 420,267.70, 630,406.12 and 120,750.76 is: 181,127.45
Step by Step Solution
- Step 1: Write the proportion equation
420,267.70 : 630,406.12 = 120,750.76 : x - Step 2: Convert to fraction form
420,267.70/630,406.12 = 120,750.76/x - Step 3: Cross multiply
420,267.70x = 630,406.12 × 120,750.76 - Step 4: Simplify right side
420,267.70x = 76,122,018,098.65 - Step 5: Solve for x
x = 76,122,018,098.65/420,267.70 - Step 6: Final answer
x = 181,127.45
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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.