Finding the Fourth Proportional to 390,363.05, 538,836.67 and 268,259.75
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Solution
The fourth proportional to 390,363.05, 538,836.67 and 268,259.75 is: 370,291.67
Step by Step Solution
- Step 1: Write the proportion equation
390,363.05 : 538,836.67 = 268,259.75 : x - Step 2: Convert to fraction form
390,363.05/538,836.67 = 268,259.75/x - Step 3: Cross multiply
390,363.05x = 538,836.67 × 268,259.75 - Step 4: Simplify right side
390,363.05x = 144,548,189,125.45 - Step 5: Solve for x
x = 144,548,189,125.45/390,363.05 - Step 6: Final answer
x = 370,291.67
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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.