Finding the Fourth Proportional to 390,794.93, 539,306.67 and 218,711.54
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Solution
The fourth proportional to 390,794.93, 539,306.67 and 218,711.54 is: 301,827.34
Step by Step Solution
- Step 1: Write the proportion equation
390,794.93 : 539,306.67 = 218,711.54 : x - Step 2: Convert to fraction form
390,794.93/539,306.67 = 218,711.54/x - Step 3: Cross multiply
390,794.93x = 539,306.67 × 218,711.54 - Step 4: Simplify right side
390,794.93x = 117,952,592,327.97 - Step 5: Solve for x
x = 117,952,592,327.97/390,794.93 - Step 6: Final answer
x = 301,827.34
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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.