Finding the Fourth Proportional to 390,336.84, 538,675.38 and 220,567.08
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Solution
The fourth proportional to 390,336.84, 538,675.38 and 220,567.08 is: 304,388.53
Step by Step Solution
- Step 1: Write the proportion equation
390,336.84 : 538,675.38 = 220,567.08 : x - Step 2: Convert to fraction form
390,336.84/538,675.38 = 220,567.08/x - Step 3: Cross multiply
390,336.84x = 538,675.38 × 220,567.08 - Step 4: Simplify right side
390,336.84x = 118,814,055,634.49 - Step 5: Solve for x
x = 118,814,055,634.49/390,336.84 - Step 6: Final answer
x = 304,388.53
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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.