Finding the Fourth Proportional to 257,325,379.67, 355,111,767.09 and 139,850,715.98
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Solution
The fourth proportional to 257,325,379.67, 355,111,767.09 and 139,850,715.98 is: 192,995,478.89
Step by Step Solution
- Step 1: Write the proportion equation
257,325,379.67 : 355,111,767.09 = 139,850,715.98 : x - Step 2: Convert to fraction form
257,325,379.67/355,111,767.09 = 139,850,715.98/x - Step 3: Cross multiply
257,325,379.67x = 355,111,767.09 × 139,850,715.98 - Step 4: Simplify right side
257,325,379.67x = 49,662,634,878,683,936 - Step 5: Solve for x
x = 49,662,634,878,683,936/257,325,379.67 - Step 6: Final answer
x = 192,995,478.89
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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.