Finding the Fourth Proportional to 338,325.42, 507,487.95 and 315,905.28
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Solution
The fourth proportional to 338,325.42, 507,487.95 and 315,905.28 is: 473,857.75
Step by Step Solution
- Step 1: Write the proportion equation
338,325.42 : 507,487.95 = 315,905.28 : x - Step 2: Convert to fraction form
338,325.42/507,487.95 = 315,905.28/x - Step 3: Cross multiply
338,325.42x = 507,487.95 × 315,905.28 - Step 4: Simplify right side
338,325.42x = 160,318,122,941.38 - Step 5: Solve for x
x = 160,318,122,941.38/338,325.42 - Step 6: Final answer
x = 473,857.75
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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.