Finding the Fourth Proportional to 257,170,713.21, 354,898,229.63 and 139,698,370.17
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Solution
The fourth proportional to 257,170,713.21, 354,898,229.63 and 139,698,370.17 is: 192,785,187.85
Step by Step Solution
- Step 1: Write the proportion equation
257,170,713.21 : 354,898,229.63 = 139,698,370.17 : x - Step 2: Convert to fraction form
257,170,713.21/354,898,229.63 = 139,698,370.17/x - Step 3: Cross multiply
257,170,713.21x = 354,898,229.63 × 139,698,370.17 - Step 4: Simplify right side
257,170,713.21x = 49,578,704,254,830,904 - Step 5: Solve for x
x = 49,578,704,254,830,904/257,170,713.21 - Step 6: Final answer
x = 192,785,187.85
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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.