Finding the Fourth Proportional to 381,894.63, 527,031.27 and 212,128.76
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Solution
The fourth proportional to 381,894.63, 527,031.27 and 212,128.76 is: 292,746.95
Step by Step Solution
- Step 1: Write the proportion equation
381,894.63 : 527,031.27 = 212,128.76 : x - Step 2: Convert to fraction form
381,894.63/527,031.27 = 212,128.76/x - Step 3: Cross multiply
381,894.63x = 527,031.27 × 212,128.76 - Step 4: Simplify right side
381,894.63x = 111,798,487,151.17 - Step 5: Solve for x
x = 111,798,487,151.17/381,894.63 - Step 6: Final answer
x = 292,746.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.