Finding the Fourth Proportional to 387,976.84, 581,930.63 and 135,214.31
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Solution
The fourth proportional to 387,976.84, 581,930.63 and 135,214.31 is: 202,809.40
Step by Step Solution
- Step 1: Write the proportion equation
387,976.84 : 581,930.63 = 135,214.31 : x - Step 2: Convert to fraction form
387,976.84/581,930.63 = 135,214.31/x - Step 3: Cross multiply
387,976.84x = 581,930.63 × 135,214.31 - Step 4: Simplify right side
387,976.84x = 78,685,349,889.12 - Step 5: Solve for x
x = 78,685,349,889.12/387,976.84 - Step 6: Final answer
x = 202,809.40
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.