Finding the Fourth Proportional to 390,964.26, 539,473.32 and 218,873.28
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Solution
The fourth proportional to 390,964.26, 539,473.32 and 218,873.28 is: 302,013.02
Step by Step Solution
- Step 1: Write the proportion equation
390,964.26 : 539,473.32 = 218,873.28 : x - Step 2: Convert to fraction form
390,964.26/539,473.32 = 218,873.28/x - Step 3: Cross multiply
390,964.26x = 539,473.32 × 218,873.28 - Step 4: Simplify right side
390,964.26x = 118,076,295,020.89 - Step 5: Solve for x
x = 118,076,295,020.89/390,964.26 - Step 6: Final answer
x = 302,013.02
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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.