Finding the Fourth Proportional to 316,155.81, 474,258.47 and 91,519.62
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Solution
The fourth proportional to 316,155.81, 474,258.47 and 91,519.62 is: 137,286.59
Step by Step Solution
- Step 1: Write the proportion equation
316,155.81 : 474,258.47 = 91,519.62 : x - Step 2: Convert to fraction form
316,155.81/474,258.47 = 91,519.62/x - Step 3: Cross multiply
316,155.81x = 474,258.47 × 91,519.62 - Step 4: Simplify right side
316,155.81x = 43,403,954,498.58 - Step 5: Solve for x
x = 43,403,954,498.58/316,155.81 - Step 6: Final answer
x = 137,286.59
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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.