Finding the Fourth Proportional to 403,875.54, 557,021.07 and 355,372.74
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Solution
The fourth proportional to 403,875.54, 557,021.07 and 355,372.74 is: 490,126.50
Step by Step Solution
- Step 1: Write the proportion equation
403,875.54 : 557,021.07 = 355,372.74 : x - Step 2: Convert to fraction form
403,875.54/557,021.07 = 355,372.74/x - Step 3: Cross multiply
403,875.54x = 557,021.07 × 355,372.74 - Step 4: Simplify right side
403,875.54x = 197,950,103,883.63 - Step 5: Solve for x
x = 197,950,103,883.63/403,875.54 - Step 6: Final answer
x = 490,126.50
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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.