Finding the Fourth Proportional to 239,580,368, 330,620,907.60 and 129,572,080.88
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Solution
The fourth proportional to 239,580,368, 330,620,907.60 and 129,572,080.88 is: 178,809,471.48
Step by Step Solution
- Step 1: Write the proportion equation
239,580,368 : 330,620,907.60 = 129,572,080.88 : x - Step 2: Convert to fraction form
239,580,368/330,620,907.60 = 129,572,080.88/x - Step 3: Cross multiply
239,580,368x = 330,620,907.60 × 129,572,080.88 - Step 4: Simplify right side
239,580,368x = 42,839,238,980,166,208 - Step 5: Solve for x
x = 42,839,238,980,166,208/239,580,368 - Step 6: Final answer
x = 178,809,471.48
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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.