Finding the Fourth Proportional to 402,903.78, 555,995.61 and 221,615.70
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Solution
The fourth proportional to 402,903.78, 555,995.61 and 221,615.70 is: 305,823.28
Step by Step Solution
- Step 1: Write the proportion equation
402,903.78 : 555,995.61 = 221,615.70 : x - Step 2: Convert to fraction form
402,903.78/555,995.61 = 221,615.70/x - Step 3: Cross multiply
402,903.78x = 555,995.61 × 221,615.70 - Step 4: Simplify right side
402,903.78x = 123,217,356,307.08 - Step 5: Solve for x
x = 123,217,356,307.08/402,903.78 - Step 6: Final answer
x = 305,823.28
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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.