Finding the Fourth Proportional to 338,423.26, 507,636.09 and 85,703.68
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Solution
The fourth proportional to 338,423.26, 507,636.09 and 85,703.68 is: 128,555.82
Step by Step Solution
- Step 1: Write the proportion equation
338,423.26 : 507,636.09 = 85,703.68 : x - Step 2: Convert to fraction form
338,423.26/507,636.09 = 85,703.68/x - Step 3: Cross multiply
338,423.26x = 507,636.09 × 85,703.68 - Step 4: Simplify right side
338,423.26x = 43,506,281,013.81 - Step 5: Solve for x
x = 43,506,281,013.81/338,423.26 - Step 6: Final answer
x = 128,555.82
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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.