Finding the Fourth Proportional to 319,642.36, 478,936.67 and 286,681.54
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Solution
The fourth proportional to 319,642.36, 478,936.67 and 286,681.54 is: 429,549.77
Step by Step Solution
- Step 1: Write the proportion equation
319,642.36 : 478,936.67 = 286,681.54 : x - Step 2: Convert to fraction form
319,642.36/478,936.67 = 286,681.54/x - Step 3: Cross multiply
319,642.36x = 478,936.67 × 286,681.54 - Step 4: Simplify right side
319,642.36x = 137,302,302,118.07 - Step 5: Solve for x
x = 137,302,302,118.07/319,642.36 - Step 6: Final answer
x = 429,549.77
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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.