Finding the Fourth Proportional to 438,681.12, 605,375.28 and 247,683.12
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Solution
The fourth proportional to 438,681.12, 605,375.28 and 247,683.12 is: 341,800.07
Step by Step Solution
- Step 1: Write the proportion equation
438,681.12 : 605,375.28 = 247,683.12 : x - Step 2: Convert to fraction form
438,681.12/605,375.28 = 247,683.12/x - Step 3: Cross multiply
438,681.12x = 605,375.28 × 247,683.12 - Step 4: Simplify right side
438,681.12x = 149,941,238,121.27 - Step 5: Solve for x
x = 149,941,238,121.27/438,681.12 - Step 6: Final answer
x = 341,800.07
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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.