Finding the Fourth Proportional to 260,497,447.47, 390,663,206.67 and 85,579,879.59
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Solution
The fourth proportional to 260,497,447.47, 390,663,206.67 and 85,579,879.59 is: 128,342,563.48
Step by Step Solution
- Step 1: Write the proportion equation
260,497,447.47 : 390,663,206.67 = 85,579,879.59 : x - Step 2: Convert to fraction form
260,497,447.47/390,663,206.67 = 85,579,879.59/x - Step 3: Cross multiply
260,497,447.47x = 390,663,206.67 × 85,579,879.59 - Step 4: Simplify right side
260,497,447.47x = 33,432,910,187,061,888 - Step 5: Solve for x
x = 33,432,910,187,061,888/260,497,447.47 - Step 6: Final answer
x = 128,342,563.48
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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.