Finding the Fourth Proportional to 457,395.75, 631,206.14 and 278,547.75
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Solution
The fourth proportional to 457,395.75, 631,206.14 and 278,547.75 is: 384,395.90
Step by Step Solution
- Step 1: Write the proportion equation
457,395.75 : 631,206.14 = 278,547.75 : x - Step 2: Convert to fraction form
457,395.75/631,206.14 = 278,547.75/x - Step 3: Cross multiply
457,395.75x = 631,206.14 × 278,547.75 - Step 4: Simplify right side
457,395.75x = 175,821,048,690.45 - Step 5: Solve for x
x = 175,821,048,690.45/457,395.75 - Step 6: Final answer
x = 384,395.90
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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.