Finding the Fourth Proportional to 346,643.80, 519,965.70 and 291,347.80
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Solution
The fourth proportional to 346,643.80, 519,965.70 and 291,347.80 is: 437,021.70
Step by Step Solution
- Step 1: Write the proportion equation
346,643.80 : 519,965.70 = 291,347.80 : x - Step 2: Convert to fraction form
346,643.80/519,965.70 = 291,347.80/x - Step 3: Cross multiply
346,643.80x = 519,965.70 × 291,347.80 - Step 4: Simplify right side
346,643.80x = 151,490,862,770.46 - Step 5: Solve for x
x = 151,490,862,770.46/346,643.80 - Step 6: Final answer
x = 437,021.70
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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.