Finding the Fourth Proportional to 390,108.13, 585,187.70 and 120,203.17
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Solution
The fourth proportional to 390,108.13, 585,187.70 and 120,203.17 is: 180,312.61
Step by Step Solution
- Step 1: Write the proportion equation
390,108.13 : 585,187.70 = 120,203.17 : x - Step 2: Convert to fraction form
390,108.13/585,187.70 = 120,203.17/x - Step 3: Cross multiply
390,108.13x = 585,187.70 × 120,203.17 - Step 4: Simplify right side
390,108.13x = 70,341,414,521.02 - Step 5: Solve for x
x = 70,341,414,521.02/390,108.13 - Step 6: Final answer
x = 180,312.61
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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.