Finding the Fourth Proportional to 257,325,699.12, 355,112,208.76 and 139,851,036.08
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Solution
The fourth proportional to 257,325,699.12, 355,112,208.76 and 139,851,036.08 is: 192,995,921.08
Step by Step Solution
- Step 1: Write the proportion equation
257,325,699.12 : 355,112,208.76 = 139,851,036.08 : x - Step 2: Convert to fraction form
257,325,699.12/355,112,208.76 = 139,851,036.08/x - Step 3: Cross multiply
257,325,699.12x = 355,112,208.76 × 139,851,036.08 - Step 4: Simplify right side
257,325,699.12x = 49,662,810,319,743,256 - Step 5: Solve for x
x = 49,662,810,319,743,256/257,325,699.12 - Step 6: Final answer
x = 192,995,921.08
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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.