Finding the Fourth Proportional to 318,676.08, 438,824.52 and 311,603.88
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Solution
The fourth proportional to 318,676.08, 438,824.52 and 311,603.88 is: 429,085.93
Step by Step Solution
- Step 1: Write the proportion equation
318,676.08 : 438,824.52 = 311,603.88 : x - Step 2: Convert to fraction form
318,676.08/438,824.52 = 311,603.88/x - Step 3: Cross multiply
318,676.08x = 438,824.52 × 311,603.88 - Step 4: Simplify right side
318,676.08x = 136,739,423,071.14 - Step 5: Solve for x
x = 136,739,423,071.14/318,676.08 - Step 6: Final answer
x = 429,085.93
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.