Finding the Fourth Proportional to 312,878,824.48, 431,766,281.68 and 173,641,499.68
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Solution
The fourth proportional to 312,878,824.48, 431,766,281.68 and 173,641,499.68 is: 239,621,664.35
Step by Step Solution
- Step 1: Write the proportion equation
312,878,824.48 : 431,766,281.68 = 173,641,499.68 : x - Step 2: Convert to fraction form
312,878,824.48/431,766,281.68 = 173,641,499.68/x - Step 3: Cross multiply
312,878,824.48x = 431,766,281.68 × 173,641,499.68 - Step 4: Simplify right side
312,878,824.48x = 74,972,544,662,172,512 - Step 5: Solve for x
x = 74,972,544,662,172,512/312,878,824.48 - Step 6: Final answer
x = 239,621,664.35
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.