Finding the Fourth Proportional to 215,814,541.80, 323,721,812.70 and 193,139,725.80
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Solution
The fourth proportional to 215,814,541.80, 323,721,812.70 and 193,139,725.80 is: 289,709,588.70
Step by Step Solution
- Step 1: Write the proportion equation
215,814,541.80 : 323,721,812.70 = 193,139,725.80 : x - Step 2: Convert to fraction form
215,814,541.80/323,721,812.70 = 193,139,725.80/x - Step 3: Cross multiply
215,814,541.80x = 323,721,812.70 × 193,139,725.80 - Step 4: Simplify right side
215,814,541.80x = 62,523,542,140,356,960 - Step 5: Solve for x
x = 62,523,542,140,356,960/215,814,541.80 - Step 6: Final answer
x = 289,709,588.70
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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.