Finding the Fourth Proportional to 320,973.99, 442,938.69 and 177,730.95
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Solution
The fourth proportional to 320,973.99, 442,938.69 and 177,730.95 is: 245,265.71
Step by Step Solution
- Step 1: Write the proportion equation
320,973.99 : 442,938.69 = 177,730.95 : x - Step 2: Convert to fraction form
320,973.99/442,938.69 = 177,730.95/x - Step 3: Cross multiply
320,973.99x = 442,938.69 × 177,730.95 - Step 4: Simplify right side
320,973.99x = 78,723,913,276.80 - Step 5: Solve for x
x = 78,723,913,276.80/320,973.99 - Step 6: Final answer
x = 245,265.71
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1.5x scale
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.