Finding the Fourth Proportional to 390,536.96, 585,136.80 and 213,168.48
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Solution
The fourth proportional to 390,536.96, 585,136.80 and 213,168.48 is: 319,387.75
Step by Step Solution
- Step 1: Write the proportion equation
390,536.96 : 585,136.80 = 213,168.48 : x - Step 2: Convert to fraction form
390,536.96/585,136.80 = 213,168.48/x - Step 3: Cross multiply
390,536.96x = 585,136.80 × 213,168.48 - Step 4: Simplify right side
390,536.96x = 124,732,722,248.06 - Step 5: Solve for x
x = 124,732,722,248.06/390,536.96 - Step 6: Final answer
x = 319,387.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.