Finding the Fourth Proportional to 256,462,442.70, 384,664,139.55 and 74,709,620.70
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Solution
The fourth proportional to 256,462,442.70, 384,664,139.55 and 74,709,620.70 is: 112,055,830.32
Step by Step Solution
- Step 1: Write the proportion equation
256,462,442.70 : 384,664,139.55 = 74,709,620.70 : x - Step 2: Convert to fraction form
256,462,442.70/384,664,139.55 = 74,709,620.70/x - Step 3: Cross multiply
256,462,442.70x = 384,664,139.55 × 74,709,620.70 - Step 4: Simplify right side
256,462,442.70x = 28,738,111,962,672,372 - Step 5: Solve for x
x = 28,738,111,962,672,372/256,462,442.70 - Step 6: Final answer
x = 112,055,830.32
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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.