Finding the Fourth Proportional to 168,435,252.20, 252,652,878.30 and 143,776,389.80
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Solution
The fourth proportional to 168,435,252.20, 252,652,878.30 and 143,776,389.80 is: 215,664,584.70
Step by Step Solution
- Step 1: Write the proportion equation
168,435,252.20 : 252,652,878.30 = 143,776,389.80 : x - Step 2: Convert to fraction form
168,435,252.20/252,652,878.30 = 143,776,389.80/x - Step 3: Cross multiply
168,435,252.20x = 252,652,878.30 × 143,776,389.80 - Step 4: Simplify right side
168,435,252.20x = 36,325,518,714,552,768 - Step 5: Solve for x
x = 36,325,518,714,552,768/168,435,252.20 - Step 6: Final answer
x = 215,664,584.70
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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.