Finding the Fourth Proportional to 257,325,697.12, 355,112,206 and 139,851,034.08
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Solution
The fourth proportional to 257,325,697.12, 355,112,206 and 139,851,034.08 is: 192,995,918.32
Step by Step Solution
- Step 1: Write the proportion equation
257,325,697.12 : 355,112,206 = 139,851,034.08 : x - Step 2: Convert to fraction form
257,325,697.12/355,112,206 = 139,851,034.08/x - Step 3: Cross multiply
257,325,697.12x = 355,112,206 × 139,851,034.08 - Step 4: Simplify right side
257,325,697.12x = 49,662,809,223,529,984 - Step 5: Solve for x
x = 49,662,809,223,529,984/257,325,697.12 - Step 6: Final answer
x = 192,995,918.32
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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.