Finding the Fourth Proportional to 315,238,829.49, 472,448,038.16 and 128,274,840.97
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Solution
The fourth proportional to 315,238,829.49, 472,448,038.16 and 128,274,840.97 is: 192,245,343.19
Step by Step Solution
- Step 1: Write the proportion equation
315,238,829.49 : 472,448,038.16 = 128,274,840.97 : x - Step 2: Convert to fraction form
315,238,829.49/472,448,038.16 = 128,274,840.97/x - Step 3: Cross multiply
315,238,829.49x = 472,448,038.16 × 128,274,840.97 - Step 4: Simplify right side
315,238,829.49x = 60,603,196,960,702,064 - Step 5: Solve for x
x = 60,603,196,960,702,064/315,238,829.49 - Step 6: Final answer
x = 192,245,343.19
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.