Finding the Fourth Proportional to 157,173,154.40, 215,327,989.84 and 151,282,348.40
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Solution
The fourth proportional to 157,173,154.40, 215,327,989.84 and 151,282,348.40 is: 207,257,556.82
Step by Step Solution
- Step 1: Write the proportion equation
157,173,154.40 : 215,327,989.84 = 151,282,348.40 : x - Step 2: Convert to fraction form
157,173,154.40/215,327,989.84 = 151,282,348.40/x - Step 3: Cross multiply
157,173,154.40x = 215,327,989.84 × 151,282,348.40 - Step 4: Simplify right side
157,173,154.40x = 32,575,323,979,246,544 - Step 5: Solve for x
x = 32,575,323,979,246,544/157,173,154.40 - Step 6: Final answer
x = 207,257,556.82
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.