Finding the Fourth Proportional to 256,243,405.20, 384,430,652.16 and 74,490,583.20
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Solution
The fourth proportional to 256,243,405.20, 384,430,652.16 and 74,490,583.20 is: 111,754,928.70
Step by Step Solution
- Step 1: Write the proportion equation
256,243,405.20 : 384,430,652.16 = 74,490,583.20 : x - Step 2: Convert to fraction form
256,243,405.20/384,430,652.16 = 74,490,583.20/x - Step 3: Cross multiply
256,243,405.20x = 384,430,652.16 × 74,490,583.20 - Step 4: Simplify right side
256,243,405.20x = 28,636,463,477,432,584 - Step 5: Solve for x
x = 28,636,463,477,432,584/256,243,405.20 - Step 6: Final answer
x = 111,754,928.70
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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.