Finding the Fourth Proportional to 286,867.68, 395,886.90 and 157,811.52
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Solution
The fourth proportional to 286,867.68, 395,886.90 and 157,811.52 is: 217,785.12
Step by Step Solution
- Step 1: Write the proportion equation
286,867.68 : 395,886.90 = 157,811.52 : x - Step 2: Convert to fraction form
286,867.68/395,886.90 = 157,811.52/x - Step 3: Cross multiply
286,867.68x = 395,886.90 × 157,811.52 - Step 4: Simplify right side
286,867.68x = 62,475,513,437.09 - Step 5: Solve for x
x = 62,475,513,437.09/286,867.68 - Step 6: Final answer
x = 217,785.12
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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.