Finding the Fourth Proportional to 386,349.20, 579,560.66 and 120,038.20
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Solution
The fourth proportional to 386,349.20, 579,560.66 and 120,038.20 is: 180,068.75
Step by Step Solution
- Step 1: Write the proportion equation
386,349.20 : 579,560.66 = 120,038.20 : x - Step 2: Convert to fraction form
386,349.20/579,560.66 = 120,038.20/x - Step 3: Cross multiply
386,349.20x = 579,560.66 × 120,038.20 - Step 4: Simplify right side
386,349.20x = 69,569,418,417.21 - Step 5: Solve for x
x = 69,569,418,417.21/386,349.20 - Step 6: Final answer
x = 180,068.75
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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.