Finding the Fourth Proportional to 390,497.63, 585,522.27 and 153,711.14
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Solution
The fourth proportional to 390,497.63, 585,522.27 and 153,711.14 is: 230,478.46
Step by Step Solution
- Step 1: Write the proportion equation
390,497.63 : 585,522.27 = 153,711.14 : x - Step 2: Convert to fraction form
390,497.63/585,522.27 = 153,711.14/x - Step 3: Cross multiply
390,497.63x = 585,522.27 × 153,711.14 - Step 4: Simplify right side
390,497.63x = 90,001,292,689.48 - Step 5: Solve for x
x = 90,001,292,689.48/390,497.63 - Step 6: Final answer
x = 230,478.46
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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.