Finding the Fourth Proportional to 430,948.13, 646,422.21 and 135,460.13
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Solution
The fourth proportional to 430,948.13, 646,422.21 and 135,460.13 is: 203,190.19
Step by Step Solution
- Step 1: Write the proportion equation
430,948.13 : 646,422.21 = 135,460.13 : x - Step 2: Convert to fraction form
430,948.13/646,422.21 = 135,460.13/x - Step 3: Cross multiply
430,948.13x = 646,422.21 × 135,460.13 - Step 4: Simplify right side
430,948.13x = 87,564,433,369.38 - Step 5: Solve for x
x = 87,564,433,369.38/430,948.13 - Step 6: Final answer
x = 203,190.19
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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.