Finding the Fourth Proportional to 389,829.69, 537,959.16 and 217,750.05
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Solution
The fourth proportional to 389,829.69, 537,959.16 and 217,750.05 is: 300,491.82
Step by Step Solution
- Step 1: Write the proportion equation
389,829.69 : 537,959.16 = 217,750.05 : x - Step 2: Convert to fraction form
389,829.69/537,959.16 = 217,750.05/x - Step 3: Cross multiply
389,829.69x = 537,959.16 × 217,750.05 - Step 4: Simplify right side
389,829.69x = 117,140,633,987.96 - Step 5: Solve for x
x = 117,140,633,987.96/389,829.69 - Step 6: Final answer
x = 300,491.82
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.