Finding the Fourth Proportional to 390,772.96, 539,287.68 and 247,480.80
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Solution
The fourth proportional to 390,772.96, 539,287.68 and 247,480.80 is: 341,536.80
Step by Step Solution
- Step 1: Write the proportion equation
390,772.96 : 539,287.68 = 247,480.80 : x - Step 2: Convert to fraction form
390,772.96/539,287.68 = 247,480.80/x - Step 3: Cross multiply
390,772.96x = 539,287.68 × 247,480.80 - Step 4: Simplify right side
390,772.96x = 133,463,346,476.54 - Step 5: Solve for x
x = 133,463,346,476.54/390,772.96 - Step 6: Final answer
x = 341,536.80
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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.