Finding the Fourth Proportional to 320,921.01, 442,900.71 and 177,681.07
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Solution
The fourth proportional to 320,921.01, 442,900.71 and 177,681.07 is: 245,216.32
Step by Step Solution
- Step 1: Write the proportion equation
320,921.01 : 442,900.71 = 177,681.07 : x - Step 2: Convert to fraction form
320,921.01/442,900.71 = 177,681.07/x - Step 3: Cross multiply
320,921.01x = 442,900.71 × 177,681.07 - Step 4: Simplify right side
320,921.01x = 78,695,071,364.53 - Step 5: Solve for x
x = 78,695,071,364.53/320,921.01 - Step 6: Final answer
x = 245,216.32
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1.5x scale
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.