Finding the Fourth Proportional to 287,918.76, 431,878.14 and 147,587.88
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Solution
The fourth proportional to 287,918.76, 431,878.14 and 147,587.88 is: 221,381.82
Step by Step Solution
- Step 1: Write the proportion equation
287,918.76 : 431,878.14 = 147,587.88 : x - Step 2: Convert to fraction form
287,918.76/431,878.14 = 147,587.88/x - Step 3: Cross multiply
287,918.76x = 431,878.14 × 147,587.88 - Step 4: Simplify right side
287,918.76x = 63,739,979,100.94 - Step 5: Solve for x
x = 63,739,979,100.94/287,918.76 - Step 6: Final answer
x = 221,381.82
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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.