Finding the Fourth Proportional to 402,681.74, 555,701.91 and 221,412.20
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Solution
The fourth proportional to 402,681.74, 555,701.91 and 221,412.20 is: 305,549.45
Step by Step Solution
- Step 1: Write the proportion equation
402,681.74 : 555,701.91 = 221,412.20 : x - Step 2: Convert to fraction form
402,681.74/555,701.91 = 221,412.20/x - Step 3: Cross multiply
402,681.74x = 555,701.91 × 221,412.20 - Step 4: Simplify right side
402,681.74x = 123,039,182,437.30 - Step 5: Solve for x
x = 123,039,182,437.30/402,681.74 - Step 6: Final answer
x = 305,549.45
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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.