Finding the Fourth Proportional to 257,537.16, 386,416.74 and 139,291.74
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Solution
The fourth proportional to 257,537.16, 386,416.74 and 139,291.74 is: 208,997.65
Step by Step Solution
- Step 1: Write the proportion equation
257,537.16 : 386,416.74 = 139,291.74 : x - Step 2: Convert to fraction form
257,537.16/386,416.74 = 139,291.74/x - Step 3: Cross multiply
257,537.16x = 386,416.74 × 139,291.74 - Step 4: Simplify right side
257,537.16x = 53,824,660,079.73 - Step 5: Solve for x
x = 53,824,660,079.73/257,537.16 - Step 6: Final answer
x = 208,997.65
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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.