Finding the Fourth Proportional to 474,879.70, 712,319.55 and 142,455.70
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Solution
The fourth proportional to 474,879.70, 712,319.55 and 142,455.70 is: 213,683.55
Step by Step Solution
- Step 1: Write the proportion equation
474,879.70 : 712,319.55 = 142,455.70 : x - Step 2: Convert to fraction form
474,879.70/712,319.55 = 142,455.70/x - Step 3: Cross multiply
474,879.70x = 712,319.55 × 142,455.70 - Step 4: Simplify right side
474,879.70x = 101,473,980,118.94 - Step 5: Solve for x
x = 101,473,980,118.94/474,879.70 - Step 6: Final answer
x = 213,683.55
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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.