Finding the Fourth Proportional to 251,657.79, 347,282.58 and 136,938.70
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Solution
The fourth proportional to 251,657.79, 347,282.58 and 136,938.70 is: 188,972.60
Step by Step Solution
- Step 1: Write the proportion equation
251,657.79 : 347,282.58 = 136,938.70 : x - Step 2: Convert to fraction form
251,657.79/347,282.58 = 136,938.70/x - Step 3: Cross multiply
251,657.79x = 347,282.58 × 136,938.70 - Step 4: Simplify right side
251,657.79x = 47,556,425,985.47 - Step 5: Solve for x
x = 47,556,425,985.47/251,657.79 - Step 6: Final answer
x = 188,972.60
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.