Finding the Fourth Proportional to 390,502.19, 585,084.62 and 213,133.65
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Solution
The fourth proportional to 390,502.19, 585,084.62 and 213,133.65 is: 319,335.52
Step by Step Solution
- Step 1: Write the proportion equation
390,502.19 : 585,084.62 = 213,133.65 : x - Step 2: Convert to fraction form
390,502.19/585,084.62 = 213,133.65/x - Step 3: Cross multiply
390,502.19x = 585,084.62 × 213,133.65 - Step 4: Simplify right side
390,502.19x = 124,701,219,553.80 - Step 5: Solve for x
x = 124,701,219,553.80/390,502.19 - Step 6: Final answer
x = 319,335.52
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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.