Finding the Fourth Proportional to 251,397.78, 346,935.06 and 138,220.53
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Solution
The fourth proportional to 251,397.78, 346,935.06 and 138,220.53 is: 190,747.70
Step by Step Solution
- Step 1: Write the proportion equation
251,397.78 : 346,935.06 = 138,220.53 : x - Step 2: Convert to fraction form
251,397.78/346,935.06 = 138,220.53/x - Step 3: Cross multiply
251,397.78x = 346,935.06 × 138,220.53 - Step 4: Simplify right side
251,397.78x = 47,953,547,868.78 - Step 5: Solve for x
x = 47,953,547,868.78/251,397.78 - Step 6: Final answer
x = 190,747.70
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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.