Finding the Fourth Proportional to 411,547.40, 617,326.28 and 145,121.09
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Solution
The fourth proportional to 411,547.40, 617,326.28 and 145,121.09 is: 217,683.46
Step by Step Solution
- Step 1: Write the proportion equation
411,547.40 : 617,326.28 = 145,121.09 : x - Step 2: Convert to fraction form
411,547.40/617,326.28 = 145,121.09/x - Step 3: Cross multiply
411,547.40x = 617,326.28 × 145,121.09 - Step 4: Simplify right side
411,547.40x = 89,587,059,915.42 - Step 5: Solve for x
x = 89,587,059,915.42/411,547.40 - Step 6: Final answer
x = 217,683.46
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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.