Finding the Fourth Proportional to 384,438.98, 576,599.34 and 128,276.12
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Solution
The fourth proportional to 384,438.98, 576,599.34 and 128,276.12 is: 192,394.45
Step by Step Solution
- Step 1: Write the proportion equation
384,438.98 : 576,599.34 = 128,276.12 : x - Step 2: Convert to fraction form
384,438.98/576,599.34 = 128,276.12/x - Step 3: Cross multiply
384,438.98x = 576,599.34 × 128,276.12 - Step 4: Simplify right side
384,438.98x = 73,963,926,129.76 - Step 5: Solve for x
x = 73,963,926,129.76/384,438.98 - Step 6: Final answer
x = 192,394.45
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1.5x scale
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.