Finding the Fourth Proportional to 455,421.80, 683,132.70 and 139,837.70
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Solution
The fourth proportional to 455,421.80, 683,132.70 and 139,837.70 is: 209,756.55
Step by Step Solution
- Step 1: Write the proportion equation
455,421.80 : 683,132.70 = 139,837.70 : x - Step 2: Convert to fraction form
455,421.80/683,132.70 = 139,837.70/x - Step 3: Cross multiply
455,421.80x = 683,132.70 × 139,837.70 - Step 4: Simplify right side
455,421.80x = 95,527,705,562.79 - Step 5: Solve for x
x = 95,527,705,562.79/455,421.80 - Step 6: Final answer
x = 209,756.55
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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.