Finding the Fourth Proportional to 315,655.74, 473,690.76 and 115,977.78
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Solution
The fourth proportional to 315,655.74, 473,690.76 and 115,977.78 is: 174,042.78
Step by Step Solution
- Step 1: Write the proportion equation
315,655.74 : 473,690.76 = 115,977.78 : x - Step 2: Convert to fraction form
315,655.74/473,690.76 = 115,977.78/x - Step 3: Cross multiply
315,655.74x = 473,690.76 × 115,977.78 - Step 4: Simplify right side
315,655.74x = 54,937,602,751.31 - Step 5: Solve for x
x = 54,937,602,751.31/315,655.74 - Step 6: Final answer
x = 174,042.78
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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.