Finding the Fourth Proportional to 430,400.68, 645,679.38 and 142,228.80
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Solution
The fourth proportional to 430,400.68, 645,679.38 and 142,228.80 is: 213,369.09
Step by Step Solution
- Step 1: Write the proportion equation
430,400.68 : 645,679.38 = 142,228.80 : x - Step 2: Convert to fraction form
430,400.68/645,679.38 = 142,228.80/x - Step 3: Cross multiply
430,400.68x = 645,679.38 × 142,228.80 - Step 4: Simplify right side
430,400.68x = 91,834,203,402.14 - Step 5: Solve for x
x = 91,834,203,402.14/430,400.68 - Step 6: Final answer
x = 213,369.09
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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.