Finding the Fourth Proportional to 278,477.96, 417,155.08 and 128,509.88
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Solution
The fourth proportional to 278,477.96, 417,155.08 and 128,509.88 is: 192,505.54
Step by Step Solution
- Step 1: Write the proportion equation
278,477.96 : 417,155.08 = 128,509.88 : x - Step 2: Convert to fraction form
278,477.96/417,155.08 = 128,509.88/x - Step 3: Cross multiply
278,477.96x = 417,155.08 × 128,509.88 - Step 4: Simplify right side
278,477.96x = 53,608,549,272.19 - Step 5: Solve for x
x = 53,608,549,272.19/278,477.96 - Step 6: Final answer
x = 192,505.54
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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.