Finding the Fourth Proportional to 285,237.09, 427,830.12 and 85,602.06
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Solution
The fourth proportional to 285,237.09, 427,830.12 and 85,602.06 is: 128,395.43
Step by Step Solution
- Step 1: Write the proportion equation
285,237.09 : 427,830.12 = 85,602.06 : x - Step 2: Convert to fraction form
285,237.09/427,830.12 = 85,602.06/x - Step 3: Cross multiply
285,237.09x = 427,830.12 × 85,602.06 - Step 4: Simplify right side
285,237.09x = 36,623,139,602.05 - Step 5: Solve for x
x = 36,623,139,602.05/285,237.09 - Step 6: Final answer
x = 128,395.43
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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.