Finding the Fourth Proportional to 221,617,584.60, 332,426,376.90 and 129,784,579.80
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Solution
The fourth proportional to 221,617,584.60, 332,426,376.90 and 129,784,579.80 is: 194,676,869.70
Step by Step Solution
- Step 1: Write the proportion equation
221,617,584.60 : 332,426,376.90 = 129,784,579.80 : x - Step 2: Convert to fraction form
221,617,584.60/332,426,376.90 = 129,784,579.80/x - Step 3: Cross multiply
221,617,584.60x = 332,426,376.90 × 129,784,579.80 - Step 4: Simplify right side
221,617,584.60x = 43,143,817,640,402,920 - Step 5: Solve for x
x = 43,143,817,640,402,920/221,617,584.60 - Step 6: Final answer
x = 194,676,869.70
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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.