Finding the Fourth Proportional to 390,139.23, 585,225.71 and 134,148.15
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Solution
The fourth proportional to 390,139.23, 585,225.71 and 134,148.15 is: 201,228.02
Step by Step Solution
- Step 1: Write the proportion equation
390,139.23 : 585,225.71 = 134,148.15 : x - Step 2: Convert to fraction form
390,139.23/585,225.71 = 134,148.15/x - Step 3: Cross multiply
390,139.23x = 585,225.71 × 134,148.15 - Step 4: Simplify right side
390,139.23x = 78,506,946,161.25 - Step 5: Solve for x
x = 78,506,946,161.25/390,139.23 - Step 6: Final answer
x = 201,228.02
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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.