Finding the Fourth Proportional to 509,090.64, 763,637.80 and 172,134.08
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Solution
The fourth proportional to 509,090.64, 763,637.80 and 172,134.08 is: 258,201.74
Step by Step Solution
- Step 1: Write the proportion equation
509,090.64 : 763,637.80 = 172,134.08 : x - Step 2: Convert to fraction form
509,090.64/763,637.80 = 172,134.08/x - Step 3: Cross multiply
509,090.64x = 763,637.80 × 172,134.08 - Step 4: Simplify right side
509,090.64x = 131,448,090,156.22 - Step 5: Solve for x
x = 131,448,090,156.22/509,090.64 - Step 6: Final answer
x = 258,201.74
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.