Finding the Fourth Proportional to 411,547.19, 616,869.18 and 211,878.20
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Solution
The fourth proportional to 411,547.19, 616,869.18 and 211,878.20 is: 317,584.80
Step by Step Solution
- Step 1: Write the proportion equation
411,547.19 : 616,869.18 = 211,878.20 : x - Step 2: Convert to fraction form
411,547.19/616,869.18 = 211,878.20/x - Step 3: Cross multiply
411,547.19x = 616,869.18 × 211,878.20 - Step 4: Simplify right side
411,547.19x = 130,701,128,409.53 - Step 5: Solve for x
x = 130,701,128,409.53/411,547.19 - Step 6: Final answer
x = 317,584.80
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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.