Finding the Fourth Proportional to 282,809.49, 390,267.05 and 155,484.09
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Solution
The fourth proportional to 282,809.49, 390,267.05 and 155,484.09 is: 214,562.52
Step by Step Solution
- Step 1: Write the proportion equation
282,809.49 : 390,267.05 = 155,484.09 : x - Step 2: Convert to fraction form
282,809.49/390,267.05 = 155,484.09/x - Step 3: Cross multiply
282,809.49x = 390,267.05 × 155,484.09 - Step 4: Simplify right side
282,809.49x = 60,680,315,563.61 - Step 5: Solve for x
x = 60,680,315,563.61/282,809.49 - Step 6: Final answer
x = 214,562.52
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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.