Finding the Fourth Proportional to 430,930.13, 646,395.19 and 135,442.13
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Solution
The fourth proportional to 430,930.13, 646,395.19 and 135,442.13 is: 203,163.19
Step by Step Solution
- Step 1: Write the proportion equation
430,930.13 : 646,395.19 = 135,442.13 : x - Step 2: Convert to fraction form
430,930.13/646,395.19 = 135,442.13/x - Step 3: Cross multiply
430,930.13x = 646,395.19 × 135,442.13 - Step 4: Simplify right side
430,930.13x = 87,549,137,784.77 - Step 5: Solve for x
x = 87,549,137,784.77/430,930.13 - Step 6: Final answer
x = 203,163.19
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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.