Finding the Fourth Proportional to 445,513.80, 668,270.70 and 129,929.70
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Solution
The fourth proportional to 445,513.80, 668,270.70 and 129,929.70 is: 194,894.55
Step by Step Solution
- Step 1: Write the proportion equation
445,513.80 : 668,270.70 = 129,929.70 : x - Step 2: Convert to fraction form
445,513.80/668,270.70 = 129,929.70/x - Step 3: Cross multiply
445,513.80x = 668,270.70 × 129,929.70 - Step 4: Simplify right side
445,513.80x = 86,828,211,569.79 - Step 5: Solve for x
x = 86,828,211,569.79/445,513.80 - Step 6: Final answer
x = 194,894.55
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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.