Finding the Fourth Proportional to 221,272,879.64, 305,357,026.11 and 122,153,763.37
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Solution
The fourth proportional to 221,272,879.64, 305,357,026.11 and 122,153,763.37 is: 168,572,443.09
Step by Step Solution
- Step 1: Write the proportion equation
221,272,879.64 : 305,357,026.11 = 122,153,763.37 : x - Step 2: Convert to fraction form
221,272,879.64/305,357,026.11 = 122,153,763.37/x - Step 3: Cross multiply
221,272,879.64x = 305,357,026.11 × 122,153,763.37 - Step 4: Simplify right side
221,272,879.64x = 37,300,509,909,281,064 - Step 5: Solve for x
x = 37,300,509,909,281,064/221,272,879.64 - Step 6: Final answer
x = 168,572,443.09
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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.