Finding the Fourth Proportional to 338,802.13, 508,117.94 and 139,177.63
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Solution
The fourth proportional to 338,802.13, 508,117.94 and 139,177.63 is: 208,731.42
Step by Step Solution
- Step 1: Write the proportion equation
338,802.13 : 508,117.94 = 139,177.63 : x - Step 2: Convert to fraction form
338,802.13/508,117.94 = 139,177.63/x - Step 3: Cross multiply
338,802.13x = 508,117.94 × 139,177.63 - Step 4: Simplify right side
338,802.13x = 70,718,650,649.68 - Step 5: Solve for x
x = 70,718,650,649.68/338,802.13 - Step 6: Final answer
x = 208,731.42
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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.