Finding the Fourth Proportional to 278,454,811.48, 415,638,254.33 and 257,934,103
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Solution
The fourth proportional to 278,454,811.48, 415,638,254.33 and 257,934,103 is: 385,007,821.32
Step by Step Solution
- Step 1: Write the proportion equation
278,454,811.48 : 415,638,254.33 = 257,934,103 : x - Step 2: Convert to fraction form
278,454,811.48/415,638,254.33 = 257,934,103/x - Step 3: Cross multiply
278,454,811.48x = 415,638,254.33 × 257,934,103 - Step 4: Simplify right side
278,454,811.48x = 107,207,280,303,094,416 - Step 5: Solve for x
x = 107,207,280,303,094,416/278,454,811.48 - Step 6: Final answer
x = 385,007,821.32
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.