Finding the Fourth Proportional to 256,645,991.20, 385,063,465.20 and 84,128,432.80
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Solution
The fourth proportional to 256,645,991.20, 385,063,465.20 and 84,128,432.80 is: 126,223,619.17
Step by Step Solution
- Step 1: Write the proportion equation
256,645,991.20 : 385,063,465.20 = 84,128,432.80 : x - Step 2: Convert to fraction form
256,645,991.20/385,063,465.20 = 84,128,432.80/x - Step 3: Cross multiply
256,645,991.20x = 385,063,465.20 × 84,128,432.80 - Step 4: Simplify right side
256,645,991.20x = 32,394,785,855,813,336 - Step 5: Solve for x
x = 32,394,785,855,813,336/256,645,991.20 - Step 6: Final answer
x = 126,223,619.17
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.