Finding the Fourth Proportional to 239,294,655.90, 330,226,305.30 and 129,286,368.90
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Solution
The fourth proportional to 239,294,655.90, 330,226,305.30 and 129,286,368.90 is: 178,415,016.28
Step by Step Solution
- Step 1: Write the proportion equation
239,294,655.90 : 330,226,305.30 = 129,286,368.90 : x - Step 2: Convert to fraction form
239,294,655.90/330,226,305.30 = 129,286,368.90/x - Step 3: Cross multiply
239,294,655.90x = 330,226,305.30 × 129,286,368.90 - Step 4: Simplify right side
239,294,655.90x = 42,693,759,927,499,832 - Step 5: Solve for x
x = 42,693,759,927,499,832/239,294,655.90 - Step 6: Final answer
x = 178,415,016.28
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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.