Finding the Fourth Proportional to 278,728,818.96, 384,536,905.35 and 159,587,737.40
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Solution
The fourth proportional to 278,728,818.96, 384,536,905.35 and 159,587,737.40 is: 220,168,746.46
Step by Step Solution
- Step 1: Write the proportion equation
278,728,818.96 : 384,536,905.35 = 159,587,737.40 : x - Step 2: Convert to fraction form
278,728,818.96/384,536,905.35 = 159,587,737.40/x - Step 3: Cross multiply
278,728,818.96x = 384,536,905.35 × 159,587,737.40 - Step 4: Simplify right side
278,728,818.96x = 61,367,374,672,686,432 - Step 5: Solve for x
x = 61,367,374,672,686,432/278,728,818.96 - Step 6: Final answer
x = 220,168,746.46
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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.