Finding the Fourth Proportional to 272,801.70, 409,202.55 and 139,637.70
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Solution
The fourth proportional to 272,801.70, 409,202.55 and 139,637.70 is: 209,456.55
Step by Step Solution
- Step 1: Write the proportion equation
272,801.70 : 409,202.55 = 139,637.70 : x - Step 2: Convert to fraction form
272,801.70/409,202.55 = 139,637.70/x - Step 3: Cross multiply
272,801.70x = 409,202.55 × 139,637.70 - Step 4: Simplify right side
272,801.70x = 57,140,102,916.14 - Step 5: Solve for x
x = 57,140,102,916.14/272,801.70 - Step 6: Final answer
x = 209,456.55
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1.5x scale
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.