Finding the Fourth Proportional to 249,639.70, 374,459.55 and 81,159.70
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Solution
The fourth proportional to 249,639.70, 374,459.55 and 81,159.70 is: 121,739.55
Step by Step Solution
- Step 1: Write the proportion equation
249,639.70 : 374,459.55 = 81,159.70 : x - Step 2: Convert to fraction form
249,639.70/374,459.55 = 81,159.70/x - Step 3: Cross multiply
249,639.70x = 374,459.55 × 81,159.70 - Step 4: Simplify right side
249,639.70x = 30,391,024,740.14 - Step 5: Solve for x
x = 30,391,024,740.14/249,639.70 - Step 6: Final answer
x = 121,739.55
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1.5x scale
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.