Finding the Fourth Proportional to 318,390.84, 439,400.34 and 189,294.84
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Solution
The fourth proportional to 318,390.84, 439,400.34 and 189,294.84 is: 261,239.35
Step by Step Solution
- Step 1: Write the proportion equation
318,390.84 : 439,400.34 = 189,294.84 : x - Step 2: Convert to fraction form
318,390.84/439,400.34 = 189,294.84/x - Step 3: Cross multiply
318,390.84x = 439,400.34 × 189,294.84 - Step 4: Simplify right side
318,390.84x = 83,176,217,056.25 - Step 5: Solve for x
x = 83,176,217,056.25/318,390.84 - Step 6: Final answer
x = 261,239.35
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1.5x scale
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.