Finding the Fourth Proportional to 442,909.80, 664,364.70 and 147,421.80
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Solution
The fourth proportional to 442,909.80, 664,364.70 and 147,421.80 is: 221,132.70
Step by Step Solution
- Step 1: Write the proportion equation
442,909.80 : 664,364.70 = 147,421.80 : x - Step 2: Convert to fraction form
442,909.80/664,364.70 = 147,421.80/x - Step 3: Cross multiply
442,909.80x = 664,364.70 × 147,421.80 - Step 4: Simplify right side
442,909.80x = 97,941,839,930.46 - Step 5: Solve for x
x = 97,941,839,930.46/442,909.80 - Step 6: Final answer
x = 221,132.70
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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.