Finding the Fourth Proportional to 268,970.80, 403,339.44 and 91,430.08
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Solution
The fourth proportional to 268,970.80, 403,339.44 and 91,430.08 is: 137,105.43
Step by Step Solution
- Step 1: Write the proportion equation
268,970.80 : 403,339.44 = 91,430.08 : x - Step 2: Convert to fraction form
268,970.80/403,339.44 = 91,430.08/x - Step 3: Cross multiply
268,970.80x = 403,339.44 × 91,430.08 - Step 4: Simplify right side
268,970.80x = 36,877,357,266.36 - Step 5: Solve for x
x = 36,877,357,266.36/268,970.80 - Step 6: Final answer
x = 137,105.43
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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.