Finding the Fourth Proportional to 310,643.68, 428,686.08 and 176,507.68
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Solution
The fourth proportional to 310,643.68, 428,686.08 and 176,507.68 is: 243,579.35
Step by Step Solution
- Step 1: Write the proportion equation
310,643.68 : 428,686.08 = 176,507.68 : x - Step 2: Convert to fraction form
310,643.68/428,686.08 = 176,507.68/x - Step 3: Cross multiply
310,643.68x = 428,686.08 × 176,507.68 - Step 4: Simplify right side
310,643.68x = 75,666,385,429.09 - Step 5: Solve for x
x = 75,666,385,429.09/310,643.68 - Step 6: Final answer
x = 243,579.35
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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.